Multi-code multi-carrier code division multiple access (CDMA) system and method
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United States of America Patent
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Issued Date -
Nov 10, 2005
app pub date -
Apr 28, 2005
filing date -
Apr 28, 2004
priority date (Note) -
Abandoned
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Abstract
A multi-code multicarrier CDMA system and method for communicating data by transforming a stream of data into a plurality of code sequences selected from a code book by associating symbols of the data stream with the code sequences of the code book, wherein the codebook includes M code sequences and each of the code sequences has a length of N data symbols, copying each of the code sequences onto one or more of a plurality of subcarriers, transmitting the plurality of subcarriers, receiving the plurality of transmitted subcarriers, demodulating the received subcarriers to result in the code sequences, transforming the code sequences back into the stream of data based upon the associations between the code sequences of the code book and the symbols of the data stream, changing at least one of the number M and lengths N of the code sequences in the code book.
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