Method and system for communication in a wireless orthogonal frequency division multiplexing (OFDM) communication system
AssigneeBroadcom Corporation
InventorsSriram Mudulodu, Louay Jalloul
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Abstract
Method and system for wireless communication in an Orthogonal Frequency Division Multiplexing (OFDM) communication system is disclosed. The method involves receiving a plurality of receive-signals over a first set of antennas. Further, one or more of the plurality of receive-signals are cyclically delayed to generate one or more cyclically delayed receive-signal. Subsequently, one or more of the plurality of receive-signals are combined with one or more of the cyclically delayed receive-signals. In other words, the method involves performing receive Cyclic Delay Diversity (CDD).
Claims19
A method for operating a transceiver to maintain channel reciprocity in an Orthogonal Frequency Division Multiplexing (OFDM) communication system, the method comprising:
- receiving a first receive-signal using a first antenna and a second receive-signal using a second antenna, wherein the first receive-signal and the second receive-signal correspond to a first OFDM signal;
- applying a cyclic delay to the first receive-signal to generate a cyclically delayed first receive-signal;
- combining the second receive-signal with the cyclically delayed first receive-signal to obtain data transmitted over sub-carriers of the first receive-signal and the second receive-signal;
- applying the cyclic delay to a first transmit-signal to generate a cyclically delayed first transmit-signal;
- and
- transmitting the cyclically delayed first transmit-signal from the first antenna and a second transmit-signal from the second antenna, wherein the first transmit-signal and the second transmit-signal correspond to a second OFDM signal.
A transceiver for maintaining channel reciprocity in an Orthogonal Frequency Division Multiplexing (OFDM) communication system, the transceiver comprising:
- a cyclic delay module configured to apply a cyclic delay to a first receive-signal received over a first antenna to generate a cyclically delayed first receive-signal;
- a combiner module configured to combine the cyclically delayed first receive-signal with a second receive-signal received over a second antenna to obtain data transmitted over sub-carriers of the first receive-signal and the second receive-signal, wherein the first receive-signal and the second receive-signal correspond to a first OFDM signal;
- and
- a transmitting module configured to apply the cyclic delay to a first transmit-signal to generate a cyclically delayed first transmit-signal and transmit the cyclically delayed first transmit-signal from the first antenna and a second transmit-signal from the second antenna, wherein the first transmit-signal and the second transmit-signal correspond to a second OFDM signal.
A transceiver for maintaining channel reciprocity in an Orthogonal Frequency Division Multiplexing (OFDM) communication system, the transceiver comprising:
- a cyclic delay module configured to apply a cyclic delay to a first receive-signal to generate a cyclically delayed first receive-signal;
- a combiner module configured to combine the cyclically delayed first receive-signal with a second receive-signal to obtain data transmitted over sub-carriers of the first receive-signal and the second receive-signal;
- and
- a transmitting module configured to apply the cyclic delay to a transmit-signal to generate a cyclically delayed transmit-signal and transmit the cyclically delayed transmit-signal;
- wherein the cyclically delayed transmit-signal is transmitted over a same antenna over which the first receive signal is received.
Dependencies are inferred from the claim text.