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Frame Synchronization in Space Time Block Coded Transmit Antenna Diversity for WCDMA
Frame Synchronization in Space Time Block Coded Transmit Antenna Diversity for WCDMA
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机译:WCDMA空时分组编码发射天线分集中的帧同步
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摘要
A circuit is designed with a correction circuit (350) coupled to receive a first estimate signal ( alpha 1_j ), a second estimate signal ( alpha 2_j ), and a plurality of input signals from an external source along plural signal paths. The plurality of input signals includes a first and a second input signal (R 1_j ,R 2_j ). The correction circuit produces a first symbol estimate in response to the first and second estimate signals and the first and second input signals. The correction circuit produces a second symbol estimate in response to the first and second estimate signals and the first and second input signals. A combining circuit is coupled to receive a plurality of first symbol estimates including the first symbol estimate and a plurality of second symbol estimates including the second symbol estimate. The combining circuit produces a first symbol signal (S/ SIMILAR @ ) in response to the plurality of first symbol estimates and a second symbol signal (S/ SIMILAR @ ) in response to the plurality of second symbol estimates. A synchronization circuit (408) is coupled to receive the first and second symbol signals (400-406) and a first known symbol and a second known symbol (410-416). The synchronization circuit produces a synchronization signal (418) in response to an approximate match between the first symbol signal and the first known symbol and between the second symbol signal and the second known symbol. IMAGE
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