Performance of concatenated coded IR-UWB in the presence of multiple-access interference

TitlePerformance of concatenated coded IR-UWB in the presence of multiple-access interference
Publication TypeConference Paper
Year of Publication2008
AuthorsAhmadian, Z., and L. Lampe
Conference NameSignals, Systems and Computers, 2008 42nd Asilomar Conference on
Pagination2001 -2005
Date Publishedoct.
Keywordscoherent RAKE detection, concatenated code, concatenated codes, convolutional codes, convolutional encoder, data communications, Gilbert Elliot type Markov interference model, IEEE 802.15.4, impulse radio, interference (signal), Markov processes, multiple access interference, personal area networks, radio receivers, Reed-Solomon codes, Reed-Solomon encoder, single user channel, telecommunication standards, ultra wideband communication, ultra-wideband transmission

Impulse-radio ultra-wideband (IR-UWB) transmission has recently become popular for data communications. In the new IEEE 802.15.4 a standard, IR-UWB modulation is mated with a concatenated coding scheme consisting of a Reed-Solomon and a convolutional encoder. While most of the available literature has been dedicated to the study of uncoded IR-UWB transmission, this paper is concerned with the performance analysis for IEEE 802.15.4 a compliant concatenated coded IR-UWB systems. In particular, a semi-analytical error-rate expressions for coherent RAKE detection with suboptimal multipath combining is presented. While first a single-user channel is assumed, in the second part of this paper this analysis is extended to include the effect of IR-UWB multiple access interference. To this end, a Gilbert-Elliot-type Markov interference model is adapted to the IEEE 802.15.4 a modulation format.


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