Differential detection of turbo codes for Rayleigh fast-fading channels

TitleDifferential detection of turbo codes for Rayleigh fast-fading channels
Publication TypeJournal Article
Year of Publication1998
AuthorsMarsland, I. D., and P. T. Mathiopoulos
JournalCommunications Letters, IEEE
Pagination42 -44
Date Publishedfeb.
KeywordsBER, bit-and block-error rates, coding errors, concatenated codes, convolutional codes, demodulation, differential detection, differential detector, Doppler frequency, error correction codes, error statistics, fading, fading rates, land mobile correlation model, land mobile radio, large block sizes, performance improvements, QPSK signals, quadrature phase shift keying, quadrature phase-shift keying, Rayleigh channels, Rayleigh fast-fading channels, signal detection, turbo codes

The performance of turbo codes using differentially detected quadrature phase-shift keying (QPSK) signals transmitted over Rayleigh fast-fading channels is investigated. So far in the open technical literature dealing with turbo codes only slow fading has been considered. Our research has shown that the use of a simple differential detector in conjunction with turbo codes can generally outperform convolutional codes in terms of the bit-and block-error rates for fading rates with a BT product up to 0.1. However, to achieve significant performance improvements, large block sizes must be employed, particularly at slower fading rates


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