Comparison of MB-OFDM and DS-UWB Interference

TitleComparison of MB-OFDM and DS-UWB Interference
Publication TypeConference Paper
Year of Publication2006
AuthorsNasri, A., R. Schober, and L. Lampe
Conference NameUltra-Wideband, The 2006 IEEE 2006 International Conference on
Pagination489 -494
Date Publishedsep.
Keywordsadditive white Gaussian noise, approximation theory, AWGN, binary phase-shift keying, BPSK, direct-sequence ultra wideband interference, DS-UWB, error statistics, interference (signal), MB-OFDM, MGF, moment generating function, multi band orthogonal frequency-division multiplexing, OFDM modulation, phase shift keying, ultra wideband communication

In this paper, we compare the effects of multi-band orthogonal frequency-division multiplexing (MB-OFDM) and direct-sequence ultra-wideband (DS-UWB) interference on a narrowband (NB) signal. For this purpose, we first derive an analytical expression for the moment generating function (MGF) of DS-UWB interference. Based on this result we obtain an expression for the bit error rate (BER) of a binary phase-shift keying (BPSK) NB signal impaired by DS-UWB and additive white Gaussian noise which lends itself to efficient numerical evaluation. We show that for NB signal bandwidths much smaller than the DS-UWB bandwidth the NB system performance strongly depends on the carrier frequency offset between the NB signal and the DS-UWB signal and we derive corresponding BER approximations. Finally, we show that whether MB-OFDM or DS-UWB interference leads to less performance degradation strongly depends on the NB signal bandwidth


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