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- W2103338775 abstract "We consider a code-spread and chip-interleaved time-hopping (TH) multiple-access scheme for multiuser ultra-wideband (UWB) communications. In such a system, each user's chip sequence is interleaved by a user-specific distinct random interleaver, and the receiver is a low-complexity chip-level iterative multiuser detector (MUD) which performs simple Rake-type combining to collect the energy dispersed in multipath UWB channels. To further reduce the receiver complexity, time reversal (TR), a transmitter preprocessing technique, is also considered. When power control is employed along with TR, a single-tap receiver can be utilized which offers a desirable bit error rate (BER) performance with a significantly reduced sampling rate. Furthermore, the zigzag Hadamard (ZH) code is proposed as the low-rate code for both channel coding and spreading in the code-spread TH-UWB system. With its capacity-approaching capability and low encoding/decoding complexity, the parallel concatenated ZH code is a promising coding scheme for UWB applications." @default.
- W2103338775 created "2016-06-24" @default.
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- W2103338775 date "2006-04-01" @default.
- W2103338775 modified "2023-09-26" @default.
- W2103338775 title "A low-rate code-spread and chip-interleaved time-hopping UWB system" @default.
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- W2103338775 doi "https://doi.org/10.1109/jsac.2005.863872" @default.
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