Enhancement of the channel propagation matrix order and rank for a wireless channel

• US 8,649,418 B1
• Filed: 02/08/2013
• Issued: 02/11/2014
• Est. Priority Date: 02/08/2013
• Status: Active Grant

• Current Assignee: COMS IP Holdings LLC
• Original Assignee: CBF Networks, Inc. (COMSovereign Holding Corp.)
• Inventors: Negus, Kevin J., Proctor, James A. Jr.
• Primary Examiner(s): Fan, Chieh M
• Assistant Examiner(s): Stevens, Brian J
• Application Number:
  US13/763,530
• Time in Patent Office: 368 Days
• Field of Search: 375/211
• US Class Current: 375/211
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04B 7/0486 taking channel rank into account
• CPC Class Codes: H04B 7/08 at the receiving station
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04B 7/15 Active relay systems
• CPC Class Codes: H04B 7/15592 Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/024
• CPC Class Codes: H04L 27/38 Demodulator circuits; Receiver circuits
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

Enhancement of wireless Channel Order and rank (ECHO) systems and ECHO repeater devices for enhancement of a wireless propagation channel for point to point or point to multipoint radio configurations are disclosed. The enhancement may be used for MIMO communications channels. Aspects support a richer multipath environment to increase the rank of the channel propagation matrix and/or to increase the magnitude of the coefficients of the propagation matrix between two or more radios. Such enhancement is applicable to backhaul radios in terms of increased range or in the number of supportable information streams. The installation, provisioning, optimization, control, monitoring, and adaptation of such devices within a network of backhaul radios is also disclosed. Wireless links and control between IBR and ECHO devices, and between ECHO devices and other ECHO devices, are also disclosed.

Claims

1. A multiple input multiple output (MIMO) wireless communication system comprising:

a first radio for transmission of a plurality of first information streams having one or more associated embedded first control signals;

a second radio for reception of the plurality of first information streams and reception of one or more embedded second control signals respectively associated with one or more of the plurality of first information streams;

a repeater device for repeating one or more of the plurality of first information streams, wherein said repeater device further comprises one or more of each of;

a channel filter for channel filtering a signal comprising at least one of the plurality of first information streams and at least one of the one or more associated embedded first control signals;

a detector for performing detection of at least one of the one or more associated first embedded control signals;

a repeater device controller for enabling one or more transmitters of the repeater device based upon said detection;

a demodulator for demodulating at least one of the associated first embedded control signals to determine associated first control information;

a modulator for generating one or more second control signals;

a coupler for combining the one or more second control signals respectively with the signal comprising the one or more first information streams to produce a composite signal comprising said one or more second embedded control signals respectively associated with at least one of the one or more first information streams;

a transmitter for the transmission of said composite signal;

wherein said second radio further demodulates said one or more second embedded control signals to determine second control information, and communicates information within said second control information to said first radio; and

wherein performance of the MIMO wireless communication system is enhanced based upon adjustment of parameters associated with one or more of;

i) the repeater device, based upon information within the first control information; and

,

ii) the first radio, based upon information within the second control information and,

wherein the adjustment of parameters sets a signal level of one of the plurality of the first information streams at the repeater device relative to signal levels of one or more of the other first information streams of the plurality of first information streams to be comparable with a predetermined ratio.

2. The wireless communication system of claim 1 wherein said one or more associated embedded first control signals each comprises a signature signal.

3. The wireless communication system of claim 2 wherein a particular signature signal is unique to one of the one or more associated first information streams.

4. The wireless communication system of claim 3 wherein the particular signature signal is orthogonal to at least one other signature signal associated with another first information stream of the plurality of first information streams.

5. The wireless communication system of claim 1 wherein said repeater device utilizes said information within the first control information to adjust said parameters associated with said repeater device.

6. The wireless communication system of claim 1 wherein said repeating is only performed following detection of at least one of the one or more associated embedded first control signals.

7. The wireless communication system of claim 1, wherein said enhancement of the performance of the MIMO wireless communication system includes reducing a receive signal level difference between at least two of said plurality of said first information streams at said second radio.

8. The wireless communication system of claim 7 wherein said receive signal comprises at least one of the following:

i. an LNA output receive signal;

ii. a receive chain output receive signal;

iii. an IF coupler output receive signal; and

iv. IF coupler Modem receive signal.

9. The wireless communication system of claim 1 wherein said parameters are radio frequency (RF) parameters associated with phased array weights or settings for the repeater device and are related to at least two of the following:

i) a first receiver signal associated with said repeater device,

ii) a second receiver signal associated with said repeater device,

iii) a first transmitter signal associated with said repeater device, and

iv) a second transmitter signal associated with said repeater device.

10. The wireless communication system of claim 1 wherein said parameters are associated with digital transmit beam former weights or settings for the first radio.

11. The wireless communication system of claim 1 wherein the adjustment of parameters associated with the first radio sets the signal level of one of the plurality of the first information streams at the repeater device.

12. The wireless communication system of claim 1 wherein the adjustment of parameters associated with the repeater device sets the signal level of one of the plurality of the first information streams detected at the second radio device.

13. The wireless communication system of claim 1 wherein the repeater device further comprises:

a plurality of receive antenna structures coupled to a respective plurality of low noise amplifiers (LNAs) to provide a respective plurality of LNA output receive signals;

a plurality of receive chains respectively coupled to said plurality of LNAs to receive said respective plurality of LNA output receive signals and to provide a respective plurality of receive chain output receive signals;

a plurality of intermediate frequency (IF) couplers comprising a respective plurality of said couplers, the plurality of IF couplers respectively coupled to said plurality of receive chains to receive said respective receive chain output receive signals and to provide a respective plurality of IF coupler output receive signals and a respective plurality of IF coupler Modem receive signals;

a plurality of frequency translating feedback cancellers respectively coupled to said plurality of IF couplers to respectively receive the IF coupler output receive signals and to provide one or more frequency translating feedback canceller RF output signals;

a plurality of repeater transmitters comprising said one or more transmitters, the plurality of repeater transmitters each respectively coupled to the plurality of frequency translating feedback cancellers to receive a respective frequency translating feedback canceller RF output signal and to transmit said composite signal;

wherein the repeater device comprises one or more repeater device Modems, and wherein one or more of said one or more repeater device Modems further comprise at least one Embedded Link Processor, one or more of said one or more repeater device Modems coupled to one or more of said plurality of IF couplers to receive one or more IF Modem receive signals, and one or more of said one or more repeater device Modems further comprises said detector for performing detection of at least one of the one or more associated first embedded control signals;

wherein said repeater device controller is coupled to the said one or more repeater device Modems to exchange information with and provide control to the one or more repeater device Modems and to further provide control associated with said parameters, wherein said parameters are associated with the repeater device.

14. The wireless communication system of claim 13, wherein one or more of the outputs of one or more of said plurality of frequency translating feedback cancellers are further coupled to an RF combiner interposed between at least one of said LNAs and said respective receive chains.

15. The wireless communication system of claim 13, wherein one of said one or more channel filters are respectively interposed between said receive chains and said plurality of IF couplers.

16. The wireless communication system of claim 13, wherein the one or more of said one or more repeater device Modems further comprises a detector for performing detection of at least one of the associated second embedded control signals to determine second control information, said second control information being utilized to perform adjustment of parameters associated with the repeater device or the first radio device.

17. A multiple input multiple output (MIMO) wireless communication system comprising:

a first radio for transmission of a plurality of first information streams having one or more associated embedded first control signals;

a second radio for reception of the plurality of first information streams and reception of one or more embedded second control signals respectively associated with one or more of the plurality of first information streams;

a repeater device for repeating one or more of the plurality of first information streams, wherein said repeater device further comprises one or more of each of;

a channel filter for channel filtering a signal comprising at least one of the plurality of first information streams and at least one of the one or more associated embedded first control signals;

a detector for performing detection of at least one of the one or more associated first embedded control signals;

a repeater device controller for enabling one or more transmitters of the repeater device based upon said detection;

a demodulator for demodulating at least one of the associated first embedded control signals to determine associated first control information;

a modulator for generating one or more second control signals;

a coupler for combining the one or more second control signals respectively with the signal comprising the one or more first information streams to produce a composite signal comprising said one or more second embedded control signals respectively associated with at least one of the one or more first information streams;

a transmitter for the transmission of said composite signal;

wherein said second radio further demodulates said one or more second embedded control signals to determine second control information, and communicates information within said second control information to said first radio; and

wherein performance of the MIMO wireless communication system is enhanced based upon adjustment of parameters associated with one or more of;

i) the repeater device, based upon information within the first control information; and

,

ii) the first radio, based upon information within the second control information;

 

and, wherein the repeater device further comprises;

a plurality of receive antenna structures coupled to a respective plurality of low noise amplifiers (LNAs) to provide a respective plurality of LNA output receive signals;

a plurality of receive chains respectively coupled to said plurality of LNAs to receive said respective plurality of LNA output receive signals and to provide a respective plurality of receive chain output receive signals;

a plurality of intermediate frequency (IF) couplers comprising a respective plurality of said couplers, the plurality of IF couplers respectively coupled to said plurality of receive chains to receive said respective receive chain output receive signals and to provide a respective plurality of IF coupler output receive signals and a respective plurality of IF coupler Modem receive signals;

a plurality of frequency translating feedback cancellers respectively coupled to said plurality of IF couplers to respectively receive the IF coupler output receive signals and to provide one or more frequency translating feedback canceller RF output signals;

a plurality of repeater transmitters comprising said one or more transmitters, the plurality of repeater transmitters each respectively coupled to the plurality of frequency translating feedback cancellers to receive a respective frequency translating feedback canceller RF output signal and to transmit said composite signal;

wherein the repeater device comprises one or more repeater device Modems, and wherein one or more of said one or more repeater device Modems further comprise at least one Embedded Link Processor, one or more of said one or more repeater device Modems coupled to one or more of said plurality of IF couplers to receive one or more IF Modem receive signals, and one or more of said one or more repeater device Modems further comprises said detector for performing detection of at least one of the one or more associated first embedded control signals;

wherein said repeater device controller is coupled to the said one or more repeater device Modems to exchange information with and provide control to the one or more repeater device Modems and to further provide control associated with said parameters, wherein said parameters are associated with the repeater device.

18. The wireless communication system of claim 17, wherein one or more of the outputs of one or more of said plurality of frequency translating feedback cancellers are further coupled to an RF combiner interposed between at least one of said LNAs and said respective receive chains.

19. The wireless communication system of claim 17, wherein one of said one or more channel filters are respectively interposed between said receive chains and said plurality of IF couplers.