Adjusting a signal at a diversity system

• US 7,430,430 B2
• Filed: 12/16/2003
• Issued: 09/30/2008
• Est. Priority Date: 12/16/2003
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Magnolia Broadband Incorporated
• Inventors: Harel, Haim, Li, Yingxue, Reinisch, William
• Primary Examiner(s): Jackson; Blane J
• Application Number:
  US10/737,012
• Publication Number:
  US 20050130597A1
• Time in Patent Office: 1,750 Days
• Field of Search: 455/522, 455/69, 455/562.1, 455/101, 455/103, 455/127.1, 455/127.2, 455/127.3, 455/127.4, 455/188.1, 455/189.1, 4552321-2761
• US Class Current: 455/522
• CPC Class Codes: H04B 17/309 Measuring or estimating channel quality parameters
• CPC Class Codes: H04B 7/0613 using simultaneous transmission H04B7/0686 takes precedence
• CPC Class Codes: H04B 7/0857 using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/241 taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/26 using transmission rate or quality of service QoS [Quality of Service]
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading

Abstract

Adjusting a signal includes receiving signals and quality indicators at an adjuster. The quality indicators include as least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, channel estimates I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, a total receive power, and any combination of the preceding. A signal adjustment is calculated according to the quality indicators, and the signals are adjusted according to the signal adjustment to yield adjusted signals.

Claims

1. A method for adjusting a signal for transmission at a mobile communication device, comprising:

converting a baseband transmission signal to a radio frequency (RF) signal;

receiving said RF signal at an adjuster of said mobile communication device;

producing a plurality of RF transmit signals based on said RF signal;

determining one or more quality indicators by generating a reverse power control bit according to the transmit AGC signal;

establishing a transmit signal adjustment according to the one or more quality indicators;

separately adjusting at said transmit adjuster at least one of the plurality of RF transmit signals according to the signal adjustment to yield one or more adjusted RF transmit signals; and

transmitting said adjusted RF transmit signals on a respective plurality of antennas elements.

2. The method of claim 1, wherein:

the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, and a total receive power.

3. The method of claim 1, wherein:

the plurality of signals comprise a plurality of signals transmitted to a base station; and

the one or more quality indicators comprise at least one of a power control group boundary signal, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, a transmit AGC signal, and a total receive power.

4. The method of claim 1, wherein determining the one or more quality indicators further comprises receiving the one or more quality indicators from a baseband processor.

5. The method of claim 1, wherein determining the one or more quality indicators further comprises calculating the one or more quality indicators according to a plurality of received RF signals.

6. The method of claim 1, wherein adjusting at least one of the plurality of RF transmit signals according to the signal adjustment to yield the one or more adjusted RF transmit signals further comprises adjusting at least one of a phase and an amplitude of at least one signal of the plurality of RF transmit signals.

7. A mobile communication device comprising:

a transmit converter for converting a baseband transmit signal to a radio frequency (RF) transmit signal;

a transmit adjuster operable to receive said RF transmit signal from said transmit converter and produce a plurality of RF transmit signals based on said RF signal; and

control logic coupled to the transmit adjuster and operable to;

determine one or more quality indicators based on a received RF signal by generating a reverse power control bit according to the transmit AGC signal;

establish a signal adjustment according to the one or more quality indicators; and

adjust the plurality of signals according to the signal adjustment to yield one or more adjusted signals, wherein said transmit adjuster is to separately adjust at least one of said RF transmit signals according to the signal adjustment to yield a respective one or more adjusted RF signals;

a plurality of antenna elements connected to said transmit adjuster for transmitting said plurality of RF transmit signals, respectively.

8. The system of claim 7, wherein:

the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, and a total receive power.

9. The system of claim 7, wherein:

the plurality of signals comprise a plurality of signals transmitted to a base station from a mobile device; and

the one or more quality indicators comprise at least one of a power control group boundary signal, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, a transmit AGC signal, and a total receive power.

10. The system of claim 7, further comprising a baseband processor operable to provide the one or more quality indicators to the adjuster.

11. The system of claim 7, the control logic further operable to determine the one or more quality indicators by calculating the one or more quality indicators according to the received RF signal.

12. The system of claim 7, the control logic further operable to adjust the plurality of signals according to the signal adjustment to yield the one or more adjusted signals by adjusting at least one of a phase and an amplitude of at least one signal of the plurality of RF transmit signals.

13. Logic for adjusting a signal, the logic embodied in a medium and operable to:

receive an RF signal for transmission by a mobile communication device;

produce a plurality of RF transmit signals based on said RF signal;

determine one or more quality indicators based on a received RF signal received at said mobile communication device, by generating a reverse power control bit according to the transmit AGC signal;

establish a transmit signal adjustment according to the one or more quality indicators; and

separately adjust at least one of the plurality of RF transmit signals according to the signal adjustment to yield a respective one or more adjusted RF transmit signals.

14. The logic of claim 13, wherein:

the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, and a total receive power.

15. The logic of claim 13, wherein said logic is to further:

receive RF receive signals from a base station; and

wherein the one or more quality indicators are based on said RF receive signals, and said quality indicators comprise at least one of a power control group boundary signal, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, a transmit AGC signal, and a total receive power.

16. The logic of claim 13, further operable to determine the one or more quality indicators by receiving the one or more quality indicators from a baseband processor.

17. The logic of claim 13, further operable to determine the one or more quality indicators by calculating the one or more quality indicators according to a plurality of received RF signals.

18. The logic of claim 13, further operable to adjust the plurality of signals according to the signal adjustment to yield the one or more adjusted signals by adjusting at least one of a phase and an amplitude of at least one signal of the plurality of signals.

19. A mobile communication device, comprising:

means for converting a baseband transmission signal to a radio frequency (RF) transmit signal;

means for producing a plurality of RF transmit signals based on said RF signal;

means for determining one or more quality indicators by generating a reverse power control bit according to the transmit AGC signal;

means for establishing a transmit signal adjustment according to the one or more quality indicators; and

means for separately adjusting one or more of the plurality of RF transmit signals according to the signal adjustment to yield respective one or more adjusted RF transmit signals.

20. A method for adjusting a signal, comprising:

converting a baseband transmission signal to a radio frequency (RF) signal;

producing a plurality of RF transmit signals based on said RF signal;

receiving said plurality of RF transmit signals at an adjuster of said mobile communication device;

determining one or more quality indicators by performing at least one of;

calculating at least some of the one or more quality indicators, wherein calculating at least some of the one or more quality indicators further comprises;

receiving a transmit automatic gain control signal; and

generating the at least some of the one or more quality indicators according to the transmit automatic gain control signal; and

receiving at least some of the one or more quality indicators from an alternative source to a baseband processor;

establishing a transmit signal adjustment according to the one or more quality indicators; and

separately adjusting one or more of the plurality of RF transmit signals according to the signal adjustment to yield one or more adjusted RF transmit signals.

21. The method of claim 20, wherein calculating at least some of the one or more quality indicators further comprises:

receiving signal quality information; and

generating the at least some of the one or more quality indicators according to the signal quality information.

22. The method of claim 20, wherein the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, a total receive power.

23. A system for adjusting a signal, comprising an adjuster, wherein said adjuster comprises:

an interface operable to receive a radio frequency (RF) signal; and

control logic coupled to the interface and operable to;

determine one or more quality indicators by performing at least one of;

calculate at least some of the one or more quality indicators by;

receiving a transmit automatic gain control signal; and

generating the at least some of the one or more quality indicators according to the transmit automatic gain control signal; and

receive at least some of the one or more quality indicators from an alternative source to a baseband processor;

establish a signal adjustment according to the one or more quality indicators;

produce a plurality of RF transmit signals based on said RF signal; and

separately adjust one or more of the plurality of RF transmit signals according to the signal adjustment to yield a plurality of adjusted RF transmit signals.

24. The system of claim 23, the control logic operable to calculate at least some of the one or more quality indicators by:

receiving signal quality information; and

generating the at least some of the one or more quality indicators according to the signal quality information.

25. The system of claim 23, wherein the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, a total receive power.

26. Logic for adjusting a signal, the logic embodied in a medium and operable to:

receive a radio frequency (RF) signal;

produce a plurality of RF transmit signals based on said RF signal;

determine one or more quality indicators by performing at least one of;

calculating at least some of the one or more quality indicators by;

receiving a transmit automatic gain control signal; and

generating the at least some of the one or more quality indicators according to the transmit automatic gain control signal; and

receiving at least some of the one or more quality indicators from an alternative source to a baseband processor;

establish a signal adjustment according to the one or more quality indicators; and

separately adjust one or more of the plurality of RF transmit signals according to the signal adjustment to yield a plurality of adjusted RF transmit signals.

27. The logic of claim 26, further operable to calculate at least some of the one or more quality indicators by:

receiving signal quality information; and

generating the at least some of the one or more quality indicators according to the signal quality information.

28. The logic of claim 26, wherein the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, a total receive power.

29. A mobile communication system for adjusting a signal. comprising:

an antenna system comprising a plurality of antennas operable to receive and transmit a plurality of received and transmitted RF signals, respectively;

one or more receive adjusters operable to;

receive said plurality of RF signals received at said plurality of antennas;

determine one or more quality indicators based on said plurality of received RF signals;

establish a signal adjustment according to the one or more quality indicators;

adjust at least some of the plurality of received RF signals according to the signal adjustment; and

combine said plurality of adjusted received RF signals to yield a combined adjusted RF signal;

one or more receive converters operable to convert a frequency of the combined adjusted RF signal to a baseband frequency to obtain a combined baseband receive signal; and

one or more transmit converters operable to convert a frequency of a baseband transmit signal from baseband frequency to a radio frequency, thereby producing an RF signal for transmission;

one or more transmit adjusters operable to;

receive said RF signal for transmission;

produce a plurality of RF transmit signals based on said RF signal for transmission;

adjust at least one of the plurality of RF transmit signals according to the signal adjustment to produce at least one adjusted RF transmit signal; and

provide said plurality of RF transmit signals to said antenna system;

a baseband processor operable to receive and process the combined baseband receive signal and to produce said baseband transmit signal, wherein the baseband processor is operable to provide at least some of the one or more quality indicators to the one or more transmit and receive adjusters.

30. The system of claim 29, wherein the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, and a total receive power.

31. A mobile communication system for adjusting a signal, comprising:

an antenna system comprising a plurality of antennas operable to receive and transmit a plurality of received and transmitted RF signals, respectively;

one or more receive adjusters operable to;

receive said plurality of RF signals received at said plurality of antennas;

determine one or more quality indicators based on said plurality of received RF signals;

establish a signal adjustment according to the one or more quality indicators;

adjust at least some of the plurality of received RF signals according to the signal adjustment; and

combine said plurality of adjusted received RF signals to yield a combined adjusted RF signal;

one or more receive converters operable to convert a frequency of the combined adjusted RF signal to a baseband frequency to obtain a combined baseband receive signal; and

one or more transmit converters operable to convert a frequency of a baseband transmit signal from baseband frequency to a radio frequency, thereby producing an RF signal for transmission;

one or more transmit adjusters operable to;

receive said RF signal for transmission;

produce a plurality of RF transmit signals based on said RF signal for transmission;

adjust at least one of the plurality of RF transmit signals according to the signal adjustment to produce at least one adjusted RF transmit signal; and

provide said plurality of RF transmit signals to said antenna system;

a baseband processor operable to receive and process the combined baseband receive signal and to produce said baseband transmit signal, wherein at least one of the one or more transmit and receive adjusters is operable to generate at least some of the one or more quality indicators.

32. The system of claim 31, wherein the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, and a total receive power.

33. A mobile communication system for adjusting a signal, comprising:

an antenna system comprising a plurality of antennas operable to receive and transmit a plurality of received and transmitted RF signals, respectively;

one or more receive adjusters operable to;

receive said plurality of RF signals received at said plurality of antennas;

determine one or more quality indicators based on said plurality of received RF signals;

establish a signal adjustment according to the one or more quality indicators;

adjust at least some of the plurality of received RF signals according to the signal adjustment; and

combine said plurality of adjusted received RF signals to yield a combined adjusted RF signal;

one or more receive converters operable to convert a frequency of the combined adjusted RF signal to a baseband frequency to obtain a combined baseband receive signal; and

one or more transmit converters operable to convert a frequency of a baseband transmit signal from baseband frequency to a radio frequency, thereby producing an RF signal for transmission;

one or more transmit adjusters operable to;

receive said RF signal for transmission;

produce a plurality of RF transmit signals based on said RF signal for transmission;

adjust at least one of the plurality of RF transmit signals according to the signal adjustment to produce at least one adjusted RF transmit signal; and

provide said plurality of RF transmit signals to said antenna system;

a baseband processor operable to receive and process the combined baseband receive signal and to produce said baseband transmit signal,

further comprising an alternate source operable to provide at least some of the one or more quality indicators to the one or more transmit and receive adjusters.

34. The system of claim 33, wherein the one or more quality indicators comprise at least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, a channel estimate I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, and a total receive power.

35. A mobile communication system for adjusting a signal, comprising:

an antenna system comprising a plurality of antennas operable to receive and transmit a plurality of received and transmitted RF signals, respectively;

one or more receive adjusters operable to;

receive said plurality of RF signals received at said plurality of antennas;

determine one or more quality indicators based on said plurality of received RF signals;

establish a signal adjustment according to the one or more quality indicators;

adjust at least some of the plurality of received RF signals according to the signal adjustment; and

combine said plurality of adjusted received RF signals to yield a combined adjusted RF signal;

one or more receive converters operable to convert a frequency of the combined adjusted RF signal to a baseband frequency to obtain a combined baseband receive signal; and

one or more transmit converters operable to convert a frequency of a baseband transmit signal from baseband frequency to a radio frequency, thereby producing an RF signal for transmission;

one or more transmit adjusters operable to;

receive said RF signal for transmission;

produce a plurality of RF transmit signals based on said RF signal for transmission;

adjust at least one of the plurality of RF transmit signals according to the signal adjustment to produce at least one adjusted RF transmit signal; and

provide said plurality of RF transmit signals to said antenna system;

a baseband processor operable to receive and process the combined baseband receive signal and to produce said baseband transmit signal,

wherein the transmit adjuster is operable to;

determine one or more quality indicators by performing at least one of;

calculate at least some of the one or more quality indicators; and

receive at least some of the one or more quality indicators from an alternative source to the baseband processor.