IEEE transactions on information theory, 2004-08, Vol.50 (8), p.1769-1778
2004
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- Autor(en) / Beteiligte
- Titel
- On the capacity loss due to separation of detection and decoding
- Ist Teil von
- IEEE transactions on information theory, 2004-08, Vol.50 (8), p.1769-1778
- Ort / Verlag
- New York, NY: IEEE
- Erscheinungsjahr
- 2004
- Quelle
- IEEE Electronic Library (IEL)
- Beschreibungen/Notizen
- The performance loss due to separation of detection and decoding on the binary-input additive white Gaussian noise (AWGN) channel is quantified in terms of mutual information. Results are reported for both the code-division multiple-access (CDMA) channel in the large system limit and the intersymbol interference (ISI) channel. The results for CDMA rely on the replica method developed in statistical mechanics. It is shown that a previous result of Shamai and Verdu found for Gaussian input alphabet holds also for binary input alphabets. For the ISI channel, the performance loss is calculated via the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm. Comparisons are made to the capacity of separate detection and decoding using suboptimum detectors such as a decision-feedback equalizer.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0018-9448eISSN: 1557-9654DOI: 10.1109/TIT.2004.831854Titel-ID: cdi_proquest_journals_195893773
- Format
- –
- Schlagworte
- Applied sciences, AWGN, Capacity, Code Division Multiple Access, Coding, codes, Decision feedback equalizers, Decoding, Detection, estimation, filtering, equalization, prediction, Detectors, Exact sciences and technology, Fading, Information, signal and communications theory, Intersymbol interference, Mobile communication, Multiaccess communication, Normal distribution, Performance loss, Signal and communications theory, Signal, noise, Telecommunications and information theory, Viterbi algorithm