Patent ID: 6693973
Filing Date: 2004-02-17
Classification: H03M,H04L

Abstract:
In a sending station operable in a communication system to send data upon a communication channel susceptible to fading, an improvement of apparatus for forming channel-encoded data, said apparatus comprising:a first encoder coupled to receive first values representative of the data to be communicated upon the communication channel, said first encoder for translating the first values representative of the data into first encoded form, wherein the first encoded form is used to construct a first codeword of a systematic, recursive space-time code that complies with an equal eigenvalue criterion; and a second encoder also coupled to receive second values representative of the data to be communicated upon the communication channel, said second encoder for translating the second values representative of the data into second encoded form, wherein the second encoded form is used to construct a second codeword of a systematic, recursive space-time code that also complies with the equal eigenvalue criterion, wherein at least a selected part of the first codeword and a selected part of the second codeword are used to form the channel-encoded data.