Frame synchronization in space - time coded transmitting antenna diversity

摘要

A circuit is designed with a correction circuit (350) coupled to receive a first estimate signal (α1j), a second estimate signal (α2j), 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 (R1j,R2j). 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∼) in response to the plurality of first symbol estimates and a second symbol signal (S∼) 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.