Method and system for single weight (SW) antenna system for single channel (SC) MIMO
View Patent ↗Methods and systems for processing signals in a receiver are disclosed herein and may comprise receiving WCDMA signals via M receive antennas, tracking a plurality of received clusters within the received WCDMA signals, and estimating a complex phase and amplitude of a portion of each of the received clusters. A single cluster may comprise an aggregate of received WCDMA signal paths and (M−1) phase shifters may be utilized for the estimating of the complex phase. Complex waveforms, comprising in-phase (I) and quadrature (Q) components for the received clusters within the received WCDMA signals, may be processed. The processed complex waveforms comprising the in-phase and quadrature components may be filtered to a WCDMA baseband bandwidth. A phase and/or amplitude for at least one of the received WCDMA signals may be adjusted utilizing the estimated complex phase and amplitude. The phase and/or amplitude may be adjusted continuously and/or at discrete intervals.
1. A method for processing wireless signals in a receiver, the method comprising:
receiving a plurality of signals, wherein each signal in the plurality of signals corresponds to at least one received signal path;
shifting the phase of at least one signal in the plurality of signals;
tracking a collection of the received signal paths; and
estimating a complex phase and amplitude corresponding to the collection of received signal paths, wherein estimating the complex phase uses the shifted phase of at least one signal in the plurality of signals.
2. The method according to claim 1 , comprising adjusting the phase of a signal in the plurality of signals according to the estimated complex phase.
3. The method according to claim 2 , wherein the phase is adjusted continuously.
4. The method according to claim 2 , wherein the phase is adjusted at discrete intervals.
5. The method according to claim 1 , comprising adjusting the magnitude of a signal in the plurality of signals according to the estimated complex magnitude.
6. The method according to claim 5 , wherein, the magnitude is adjusted continuously.
7. The method according to claim 5 , wherein the magnitude is adjusted at discrete intervals.
8. The method according to claim 1 , wherein the collection of received signal paths originates from a single base station antenna.
9. The method according to claim 1 , comprising generating a time-varying channel estimate corresponding to the collection of received signal paths.
10. The method according to claim 9 , comprising generating a transmit control signal according to the time-varying channel estimate.
11. The method according to claim 10 , comprising adjusting phase or amplitude of a subsequently received signal according to the transmit control signal.
12. The method according to claim 10 , wherein the transmit control signal is generated via a single weight generator.
13. A system for processing wireless signals in a receiver comprising:
an antenna configured to receive a plurality of signals, wherein each signal in the plurality of signals corresponds to at least one received signal path;
a phase shifter configured to shift the phase of at least one signal in the plurality of signals; and
a circuit configured to:
track a collection of the received signal paths; and
estimate a complex phase and amplitude corresponding to the collection of received signal paths, wherein estimating the complex phase uses the shifted phase of at least one signal in the plurality of signals.
14. The system according to claim 13 , further comprising a circuit configured to adjust the phase of a signal in the plurality of signals according to the estimated complex phase.
15. The system according to claim 14 , wherein at least one circuit is configured to adjust the phase continuously.
16. The system according to claim 14 , wherein at least one circuit is configured to adjust the phase at discrete intervals.
17. The system to claim 13 , further comprising a circuit configured to adjust the magnitude of a signal in the plurality of signals according to the estimated complex magnitude.
18. The system according to claim 17 , wherein at east one circuit is configured to adjust the magnitude continuously.
19. The system according to claim 17 , wherein at least one circuit is configured to adjust the magnitude at discrete intervals.
20. The system according to claim 13 , wherein the collection of received signal paths originates from a single base station antenna.
21. The system according to claim 13 , further comprising a circuit configured to generate a time-varying channel estimate corresponding to the collection of received signal paths.
22. The system according to claim 21 , further comprising a circuit configured to generate a transmit control signal according to the time-varying channel estimate.
23. The system according to claim 22 , further comprising a circuit configured to adjust a phase or amplitude of a subsequently received signal according to the transmit control signal.
24. The system according to claim 22 , further comprising at least one single weight generator configured to generate the transmit control signal.