Proceedings of IEEE International Symposium on Information Theory
DOI: 10.1109/isit.1997.613011
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Abstract: The principle of coding in the signal space follows directly from Shannon's analysis of waveform Gaussian channels subject to an input constraint. The early design of communication systems focused separately on modulation, namely signal design and detection, and error correcting codes, which deal with errors introduced at the demodulator of the underlying waveform channel. The correct perspective of signalspace coding, although never out of sight of information theorists, was brought back into the focus of cod… Show more

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Cited by 1,167 publications
(510 citation statements)
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References 128 publications
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“…1 and 2 from the interleaver at the transmitter up to the deinterleaver at the receiver may be viewed as a memoryless binary symmetric channel (BSC) with a certain transition probability. Adopting the equivalent channel model introduced for a BICM system in [1], the exact uncoded bit-error probability (UBEP) can be computed for each of the parallel independent binary input channels. This can be done by first expressing the probabilities of a corresponding bit-error event conditioned on each of the QAM signals in both quadrature components, and then averaging over these conditional probabilities.…”
Section: Adaptive Bit Loadingmentioning
confidence: 99%
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“…1 and 2 from the interleaver at the transmitter up to the deinterleaver at the receiver may be viewed as a memoryless binary symmetric channel (BSC) with a certain transition probability. Adopting the equivalent channel model introduced for a BICM system in [1], the exact uncoded bit-error probability (UBEP) can be computed for each of the parallel independent binary input channels. This can be done by first expressing the probabilities of a corresponding bit-error event conditioned on each of the QAM signals in both quadrature components, and then averaging over these conditional probabilities.…”
Section: Adaptive Bit Loadingmentioning
confidence: 99%
“…using the pairwise error probability (PEP) [1] above a certain SNR threshold. Here, we prefer to have an exact UBEP for the ABL scheme rather than using the PEP analysis to derive the loading scheme for arbitrary SNRs.…”
Section: Adaptive Bit Loadingmentioning
confidence: 99%
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“…However, in real world systems, the transmit symbols will be taken from a QAM or PSK constellation. Taking this restriction on the transmit symbol alphabet into consideration, the theoretically maximum data rate can be computed from the general formula for the conditional mutual information between transmit hypersymbols x k and received symbols y for a particular channel realization H k [13,14]:…”
Section: Capacity and Mutual Informationmentioning
confidence: 99%