Methods and apparatus for providing an adaptive beamforming antenna for ofdm-based communication systems
AssigneeMarvell Asia Pte Ltd
InventorHyun Soo Cheon
Life of this patent
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Abstract
Methods and apparatus for providing an adaptive beamforming antenna for OFDM-based communication systems. In one embodiment, a method includes forming a matrix (A) of cyclic prefix values and a matrix (B) of tail values from an orthogonal frequency division multiplexed (OFDM) symbol, and forming a summation matrix (S) and a difference matrix (D) from the matrix A and the matrix B. The method also includes multiplying a beamformer preset matrix (W) with the matrix S and the matrix D to determine a matrix (P) and a matrix (Q), and determining a beam identifier from the P and Q matrices.
Claims36
A method for reducing signal interference via an adaptive beam selection during a network communication, comprising:
- receiving a stream of incoming signals via an uplink transmission from one or more antennas over a wireless network;
- obtaining a beam preset weight signal from an adaptive beam selector in response to sub-frame symbols;
- generating resulting signals in response to the stream of incoming signals and the beam preset weight signals;
- and
- forwarding the resulting signals to a sub-frame receiver to identify symbols.
An apparatus able to reduce cross-signal interference during a network communication, comprising:
- a beamformer configured to receive and process a stream of wireless signals via an uplink transmission in response to a beam preset weight;
- a sub-frame receiver coupled to the beamformer and configured to generate sub-frame symbols in accordance with the stream of wireless signals;
- and
- an adaptive beam selector coupled to the beamformer and configured to provide the beam preset weight based on a sub-frame symbol via a comparison between a cyclic prefix portion of a symbol and a tail portion of the symbol.
A method for reducing noise interference via an adaptive beam selection during a network communication, comprising:
- receiving a stream of incoming signals via an uplink transmission formatted with orthogonal frequency division multiplexing (“OFDM”) from one or more antennas over a wireless network;
- obtaining a beam preset weight signal indicating beam patterns based on sub-frame symbols from an adaptive beam selector;
- and
- generating resulting signals in response to the stream of incoming signals and the beam preset weight signals.
An apparatus for minimizing signal interference via an adaptive beam selection during a network communication comprising:
- means for receiving a stream of incoming signals via an uplink transmission from one or more antennas over a wireless network;
- means for obtaining a beam preset weight signal from an adaptive beam selector in accordance with sub-frame symbols;
- means for generating resulting signals in response to the stream of incoming signals and the beam preset weight signals;
- and
- means for forwarding the resulting signals to a sub-frame receiver to identify symbols.
An apparatus for reducing noise interference via an adaptive beam selection during a network communication comprising:
- means for receiving a stream of incoming signals via an uplink transmission formatted with orthogonal frequency division multiplexing (“OFDM”) from one or more antennas over a wireless network;
- means for obtaining a beam preset weight signal indicating beam patterns based on sub-frame symbols from an adaptive beam selector;
- and
- means for generating resulting signals in response to the stream of incoming signals and the beam preset weight signals.
Dependencies are inferred from the claim text.