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Method and apparatus for demodulating signals processed in a transmit diversity mode

  • US 7,684,474 B2
  • Filed: 01/17/2007
  • Issued: 03/23/2010
  • Est. Priority Date: 06/14/2000
  • Status: Expired due to Term
First Claim
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1. An apparatus for a communication system, comprising:

  • a first and second correlator, each correlator including;

    a decover element for decovering a plurality of received samples to provide decovered half-symbols, wherein the decover element is configured to perform decovering with a decovering channelization symbol having a length (T) that is half the length (2T) of a covering channelization symbol used to cover the received samples;

    a switch for selectively outputting the decovered half-symbols corresponding to a first half of a symbol period along a first signal path and decovered half-symbols corresponding to a second half of the symbol period along a second signal path;

    first and second summers, respectively coupled to the first and second signal paths, for combining each pair of decovered half-symbols to provide a respective decovered symbol; and

    first and second multipliers for receiving the decovered symbols and pilot symbols to provide demodulated symbols.

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