Reconfigurable orthogonal frequency division multiplexing (OFDM) chip supporting single weight diversity
View Patent ↗A method and system for a reconfigurable orthogonal frequency division multiplexing (OFDM) chip supporting single weight diversity are provided. The reconfigurable OFDM chip may be configured to process signals such as IEEE 802.11, 802.16, and digital video broadcasting (DVB). The OFDM chip may generate channel weights to be applied to signals received in receive antennas. The weighted signals may be combined into a single received signal and channel estimates may be generated from the single received signal. Updated channel weights may be generated from the generated channel estimates. Updates to the channel weights may be performed dynamically. The configurable OFDM chip may be utilized to provide collaborative cellular and OFDM-based communication. The reconfigurable OFDM chip and the cellular chip may communicate data and/or control information via a memory coupled to a common bus.
1. A method for handling wireless communication, the method comprising:
in an orthogonal frequency division multiplexing (OFDM) receiver:
selecting at least one of a plurality of generated rotation waveforms and at least one of a plurality of generated channel weights, wherein:
said plurality of generated rotation waveforms are generated to preserve an orthogonality of a plurality of signals received at a plurality of receive antennas; and
modifying at least one of said plurality of signals received at said plurality of receive antennas based on said selection.
2. The method according to claim 1 , further comprising:
combining said plurality of signals received at said plurality of receive antennas to generate a single combined received signal.
3. The method according to claim 2 , further comprising:
determining a plurality of baseband combined channel estimates based on said generated single combined received signal.
4. The method according to claim 3 , further comprising:
selecting an integration time for determining said plurality of baseband combined channel estimates.
5. The method according to claim 3 , further comprising:
determining at least one of a plurality of subsequent channel weights based on said determined plurality of baseband combined channel estimates.
6. The method according to claim 1 , further comprising:
modifying said at least one of said plurality of signals received at said plurality of receive antennas by multiplying a complex conjugate of said selected at least one of said plurality of generated rotation waveforms with a baseband combined channel estimate.
7. The method according to claim 1 , further comprising:
configuring said OFDM receiver to handle at least one of a plurality of communication protocols based on OFDM.
8. The method according to claim 7 , wherein said at least one of said plurality of communication protocols based on OFDM is an IEEE 802.11 wireless local area network (WLAN) protocol, an IEEE 802.16 wireless metropolitan area network (WMAN) protocol, or a digital video broadcasting (DVB) protocol.
9. The method according to claim 1 , wherein said plurality of generated rotation waveforms includes one of a plurality of sine waveforms, a plurality of square waveforms, or a plurality of triangular waveforms.
10. The method according to claim 1 , further comprising:
determining a phase and amplitude component for said at least one of said plurality of generated channel weights.
11. A system for handling wireless communication, the system comprising:
an orthogonal frequency division multiplexing (OFDM) receiver configured to:
select at least one of a plurality of generated rotation waveforms and at least one of a plurality of generated channel weights, wherein said plurality of generated rotation waveforms are generated to preserve an orthogonality of a plurality of signals received at a plurality of receive antennas; and
modify at least one of said plurality of signals received at said plurality of antennas based on said selection.
12. The system according to claim 11 , wherein said OFDM receiver is configured to combine said plurality of signals received at said plurality of receive antennas to generate a single combined received signal.
13. The system according to claim 12 , wherein said OFDM receiver is configured to determine a plurality of baseband combined channel estimates based on said generated single combined received signal.
14. The system according to claim 13 , wherein said OFDM receiver is configured to select an integration time for determining said plurality of baseband combined channel estimates.
15. The system according to claim 13 , wherein said OFDM receiver is configured to determine at least one of a plurality of subsequent channel weights based on said determined plurality of baseband combined channel estimates.
16. The system according to claim 11 , wherein said OFDM receiver is configured to modify said at least one of said plurality of signals received at said plurality of receive antennas by multiplying a complex conjugate of said selected at least one of said plurality of generated rotation waveforms with a baseband combined channel estimate.
17. The system according to claim 11 , wherein said OFDM receiver is configured to handle at least one of a plurality of communication protocols based on OFDM.
18. The system according to claim 17 , wherein said at least one of said plurality of communication protocols based on OFDM is an IEEE 802.11 wireless local area network (WLAN) protocol, an IEEE 802.16 wireless metropolitan area network (WMAN) protocol, or a digital video broadcasting (DVB) protocol.
19. The system according to claim 11 , wherein said plurality of generated rotation waveforms includes one of a plurality of sine waveforms, a plurality of square waveforms, or a plurality of triangular waveforms.
20. The system according to claim 11 , wherein said OFDM receiver is configured to determine a phase and amplitude component for said at least one of said plurality of generated channel weights.