Method and system of biasing a timing phase estimate of data segments of a received signal

• US 20030235252A1
• Filed: 06/19/2002
• Published: 12/25/2003
• Est. Priority Date: 06/19/2002
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Tellado, Jose, Dring, John
• Application Number:
  US10/176,300
• Publication Number:
  US 20030235252A1
• Time in Patent Office: Days
• US Class Current: 375/259
• CPC Class Codes: H04L 7/041 using special codes as synchronising signal

Abstract

The present invention provides a method and system for biasing a timing phase estimate of data segments of a received wireless signal. The method includes receiving the wireless signal. A timing phase estimate of the data segments of the wireless signal is pre-set depending upon a phase estimator estimate. The timing phase estimate of the data segments of the wireless signal is further biased as a function of a quality parameter of the wireless signal. The data segments are processed generating a receiving data stream.

Claims

1. A method of biasing a timing phase estimate of data segments of a received wireless signal, comprising:

receiving the wireless signal;

pre-setting a timing phase estimate of the data segments of the wireless signal depending upon a phase estimator estimate;

further biasing the timing phase estimate of the data segments of the wireless signal as a function of a quality parameter of the wireless signal; and

processing the data segments generating a receiving data stream.

2. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, wherein the quality parameter of the wireless signal is a function of at least one of signal to noise ratio (SNR), channel delay profile, doppler spread, data segment phase estimate, a data segment phase algorithm, an equalizer length, cyclic prefix length, coding mode, a modulation mode, signal bandwidth, bit error rate (BER), packet error rate (PER), prior channel knowledge or error detection/correction codes.

3. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, wherein the biasing the phase of the data segments of the wireless signal as a function of a quality parameter of the wireless signal is additionally used by a transceiver receiving the wireless signal to adjust transmit timing phase of transmit data segments being transmitted by the transceiver.

4. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, wherein further biasing the timing phase estimate of the data segments of the wireless signal is additionally influenced by an external quality parameter received from a transmitter of the wireless signal.

5. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, further comprising:

receiving a plurality of wireless signals through a plurality of receiver chains, each wireless signal having traveled through a corresponding transmission channel;

pre-setting a timing phase estimate of the data segments of the each of the wireless signal depending upon a phase estimator estimate;

further biasing the timing phase estimate of the data segments of each of the wireless signals as a function of a quality parameter of each of the wireless signals; and

processing the data segments generating a receiving data stream.

6. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 5, wherein timing phase estimates of the data segments of each wireless signal are biased separately.

7. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 5, wherein the timing phase estimates of the data segments of all the wireless signal are biased with the same timing phase estimate.

8. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 5, wherein the quality parameter is a function of a composite of quality parameter of each of the plurality of the received signals.

9. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 5, wherein the quality parameter of each of the receiver chains is a function of a corresponding received signal of the receiver chains.

10. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, wherein the wireless signal is a multiple carrier signal.

11. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 10, wherein further biasing the timing phase estimate of the data segments of the wireless signal as a function of a quality parameter of the wireless signal comprises:

rotating the data segments with a circular phase shift.

12. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, further comprising:

receiving wireless signals from a plurality of separate transmitter antennas.

13. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 12, further comprising:

only processing the wireless signals that include a quality parameter having a threshold value of quality.

14. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 12, wherein the wireless signals are received from a plurality of base transceiver stations.

15. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 12, wherein a timing phase estimate of received signals are additionally biased as a function of whether the transmission includes spatial multiplexing.

16. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 12, wherein a timing phase estimate of received signals are additionally biased as a function of whether the transmission includes transmit diversity.

17. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 1, further comprising:

receiving the quality parameter from a base transceiver station.

18. A method of biasing a timing phase estimate of data segments of a received wireless signal, comprising:

receiving a plurality of wireless signals through a plurality of receiver chains, each wireless signal having traveled through a corresponding transmission channel;

pre-setting a timing phase estimate of the data segments of the each of the wireless signal depending upon a phase estimator estimate;

further biasing the timing phase estimate of the data segments of each of the wireless signal as a function of a quality parameter of each of the wireless signals; and

processing the data segments generating a receiving data stream.

19. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 18, wherein the quality parameter of the wireless signal is a function of at least one of signal to noise ratio (SNR), channel delay profile, doppler spread, data segment phase estimate, a data segment phase algorithm, an equalizer length, cyclic prefix length, coding bandwidth, a modulation bandwidth, bit error rate (BER), packet error rate (PER) or error detection/correction codes.

20. The method of biasing a timing phase estimate of data segments of a received wireless signal of claim 18, wherein the biasing the phase of the data segments of the wireless signal as a function of a quality parameter of the wireless signal is additionally used by a transceiver receiving data segments to adjust transmit timing phase estimates of transmit data segments being transmitted by the transceiver.

21. A system for biasing a timing phase estimate of data segments of a received wireless signal comprising:

means for receiving the wireless signal;

means for pre-setting a timing phase estimate of the data segments of the wireless signal depending upon a phase estimator estimate;

means for further biasing the timing phase estimate of the data segments of the wireless signal as a function of a quality parameter of the wireless signal; and

means for processing the data segments generating a receiving data stream.