Decoding carriers encoded using orthogonal frequency division mu

Details Decoding carriers encoded using orthogonal frequency division mu Decoding carriers encoded using orthogonal frequency division mu

1996-10-23

1999-07-13

Pham, Chi H.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

375341, H04J 100

Patent

active

059236663

ABSTRACT:
This invention relates to decoding symbols in the form of modulated carriers which are encoded using orthogonal frequency divsion multiplexing. The modulated carriers are supplied to a decoder which is preferably a Viterbi decoder. The decoder symbols are then recoded and passed to a comparator where they are compared with the incoming modulated carriers to locate errors between each recoded symbol and the corresponding modulated carrier symbol. The error rate for each carrier is derived by a counter and the indications of error rate and the modulated carriers are used to address entries in a look up table from which a decoder decodes the symbols represented by the modulated carriers.

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