Patent ID: 6151296
Filing Date: 2000-11-21
Classification: H03M,H04L,H04N

Abstract:
A device for communicating a stream of digital data using an orthogonal frequency division multiplexing (OFDM) transmission system, the OFDM transmission system including transmitters and receivers, the device comprising:an outer symbol interleaver, configured to receive the stream of digital data composed of a first sequence of bits, said outer interleaver for interleaving the first sequence of bits to produce a second sequence of bits;an encoder for encoding the second sequence of bits to produce a third sequence of bits;an inner bit interleaver for interleaving the third sequence of bits to produce a fourth sequence of bits;a signal space grouper for generating a plurality of symbols, wherein each of the plurality of symbols represent ""m"" successive bits of the fourth sequence of bits, wherein ""m"" is an integer value greater than one;a signal space mapper for mapping the plurality of symbols onto a plurality of complex symbols; anda serial-to-parallel converter for multiplexing the plurality of complex signals into a plurality of substreams.