Method and system for implementing a single weight spatial multiplexing (SM) MIMO system without insertion loss

• US 20060083202A1
• Filed: 06/30/2005
• Published: 04/20/2006
• Est. Priority Date: 07/09/2003
• Status: Abandoned Application

• Current Assignee: Mark Kent, Pieter Roux, Pieter van Rooyen, Uri M. Landau, Vinko Erceg
• Original Assignee: Mark Kent, Pieter Roux, Pieter van Rooyen, Uri M. Landau, Vinko Erceg
• Inventors: Kent, Mark, Roux, Pieter, Landau, Uri M., Erceg, Vinko, Rooyen, Pieter Van
• Application Number:
  US11/172,781
• Publication Number:
  US 20060083202A1
• Time in Patent Office: Days
• US Class Current: 370/334
• CPC Class Codes: H04B 7/084 Equal gain combining, only phase adjustments antenna beam scanning or forming by phase or amplitude control H01Q3/26, e.g. phased arrays

Abstract

Certain aspects of the method and system for implementing a single weight spatial multiplexing multi-input multi-output (MIMO) system without insertion loss may comprise receiving a plurality of spatially multiplexed communication signals for processing in a first reference processing path and at least a second processing path. At least one control signal may be generated that controls processing of at least a portion of the received plurality of spatially multiplexed communication signals in at least the second processing path. At least one phase adjustment signal may be generated from outside at least the second processing path. A phase of at least a portion of the received plurality of spatially multiplexed communication signals may be adjusted, which are processed in at least the second processing path via at least one generated phase adjustment signal.

Claims

1. A method for processing signals in a communication system, the method comprising:

receiving a plurality of spatially multiplexed communication signals for processing in a first reference processing path and at least a second processing path;

generating at least one control signal that controls processing of at least a portion of said received plurality of said spatially multiplexed communication signals in said at least said second processing path;

generating at least one phase adjustment signal from outside said at least said second processing path; and

adjusting a phase of said at least a portion of said received plurality of said spatially multiplexed communication signals, which are processed in said at least said second processing path via said at least one generated phase adjustment signal.

2. The method according to claim 1, further comprising generating at least one amplitude adjustment signal from outside said at least said second processing path.

3. The method according to claim 2, further comprising adjusting an amplitude of said at least a portion of said received plurality of said spatially multiplexed communication signals, which are processed in said at least said second processing path via said at least one generated amplitude adjustment signal.

4. The method according to claim 1, further comprising mixing a first signal generated by a voltage controlled oscillator (VCO) with said at least said portion of said received plurality of said spatially multiplexed communication signals, which are processed in said first reference processing path.

5. The method according to claim 4, further comprising modifying said first signal generated by said VCO with said at least one generated control signal.

6. The method according to claim 5, further comprising generating said at least one phase adjustment signal by modifying said first signal generated by said VCO with said at least one generated control signal.

7. The method according to claim 6, further comprising generating at least one amplitude adjustment signal by modifying said first signal generated by said VCO with said at least one generated control signal.

8. The method according to claim 1, wherein said generated at least one control signal comprises a single weight signal.

9. The method according to claim 1, further comprising generating said at least one control signal utilizing at least one optimization algorithm comprising at least one of a maximum signal-to-noise ratio (SNR) algorithm, a maximum signal-to-interference-and-noise ratio (SINR) algorithm, and a minimum bit error rate (BER) algorithm.

10. A machine-readable storage having stored thereon, a computer program having at least one code section for processing signals in a communication system, the at least one code section being executable by a machine for causing the machine to perform steps comprising:

receiving a plurality of spatially multiplexed communication signals for processing in a first reference processing path and at least a second processing path;

generating at least one control signal that controls processing of at least a portion of said received plurality of said spatially multiplexed communication signals in said at least said second processing path;

generating at least one phase adjustment signal from outside said at least said second processing path; and

adjusting a phase of said at least a portion of said received plurality of said spatially multiplexed communication signals, which are processed in said at least said second processing path via said at least one generated phase adjustment signal.

11. The machine-readable storage according to claim 10, further comprising code for generating at least one amplitude adjustment signal from outside said at least said second processing path.

12. The machine-readable storage according to claim 11, further comprising code for adjusting an amplitude of said at least a portion of said received plurality of said spatially multiplexed communication signals, which are processed in said at least said second processing path via said at least one generated amplitude adjustment signal.

13. The machine-readable storage according to claim 10, further comprising code for mixing a first signal generated by a voltage controlled oscillator (VCO) with said at least said portion of said received plurality of said spatially multiplexed communication signals, which are processed in said first reference processing path.

14. The machine-readable storage according to claim 13, further comprising code for modifying said first signal generated by said VCO with said at least one generated control signal.

15. The machine-readable storage according to claim 14, further comprising code for generating said at least one phase adjustment signal by modifying said first signal generated by said VCO with said at least one generated control signal.

16. The machine-readable storage according to claim 15, further comprising code for generating at least one amplitude adjustment signal by modifying said first signal generated by said VCO with said at least one generated control signal.

17. The machine-readable storage according to claim 10, wherein said generated at least one control signal comprises a single weight signal.

18. The machine-readable storage according to claim 10, further comprising code for generating said at least one control signal utilizing at least one optimization algorithm comprising at least one of a maximum signal-to-noise ratio (SNR) algorithm, a maximum signal-to-interference-and-noise ratio (SINR) algorithm, and a minimum bit error rate (BER) algorithm.

19. A system for processing signals in a communication system, the system comprising:

a plurality of receive antennas that receive a plurality of spatially multiplexed communication signals for processing in a first reference processing path and at least a second processing path;

a weight generator that generates at least one control signal that controls processing of at least a portion of said received plurality of said spatially multiplexed communication signals in said at least said second processing path;

circuitry that generates at least one phase adjustment signal from outside said at least said second processing path; and

circuitry that adjusts a phase of said at least a portion of said received plurality of said spatially multiplexed communication signals, which are processed in said at least said second processing path via said at least one generated phase adjustment signal.

20. The system according to claim 19, further comprising circuitry that generates at least one amplitude adjustment signal from outside said at least said second processing path.

21. The system according to claim 20, further comprising circuitry that adjusts an amplitude of said at least a portion of said received plurality of said spatially multiplexed communication signals, which are processed in said at least said second processing path via said at least one generated amplitude adjustment signal.

22. The system according to claim 19, further comprising a mixer that mixes a first signal generated by a voltage controlled oscillator (VCO) with said at least said portion of said received plurality of said spatially multiplexed communication signals, which are processed in said first reference processing path.

23. The system according to claim 22, further comprising a phase adjuster that modifies said first signal generated by said VCO with said at least one generated control signal.

24. The system according to claim 23, further comprising circuitry that generates said at least one phase adjustment signal by modifying said first signal generated by said VCO with said at least one generated control signal.

25. The system according to claim 24, further comprising circuitry that generates at least one amplitude adjustment signal by modifying said first signal generated by said VCO with said at least one generated control signal.

26. The system according to claim 19, wherein said generated said at least one control signal comprises a single weight signal.

27. The system according to claim 19, wherein said weight generator generates said at least one control signal utilizing at least one optimization algorithm comprising at least one of a maximum signal-to-noise ratio (SNR) algorithm, a maximum signal-to-interference-and-noise ratio (SINR) algorithm, and a minimum bit error rate (BER) algorithm.