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Title: Differential TDMA impulse radio systems using delay-sum scheme in UWB channel
Authors: Qi, Z. 
Chun, S.N. 
Issue Date: 2005
Citation: Qi, Z.,Chun, S.N. (2005). Differential TDMA impulse radio systems using delay-sum scheme in UWB channel. GLOBECOM - IEEE Global Telecommunications Conference 6 : 3670-3675. ScholarBank@NUS Repository.
Abstract: Ultra wide-band (UWB) communication systems are expected to operate in a highly frequency-selective multipath fading environment. Mutipath diversity gains can be collected to provide enhanced performance. To this end, we developed a differential time division multiple access (TDMA) impulse radio scheme that is tailored for multi-user UWB communications. In the system, the differential detector is adopted. The detector, when properly combined with the TDMA system, can fully exploit the multipath diversity of UWB channels. A novel delaysum scheme is employed at the receiver to mitigate multiuser interference (MUI) and additive white Gaussian noise (AWGN). The proposed system shows better bit-error-rate (BER) performance than the conventional time-hopping impulse radio (TH-IR) system at high signal-to-noise ratio (SNR). Application of the system is promising because the receiver only needs to entail simple delay, integral and compare operations at the symbol rate. © 2005 IEEE.
Source Title: GLOBECOM - IEEE Global Telecommunications Conference
ISBN: 0780394143
DOI: 10.1109/GLOCOM.2005.1578456
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