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Orthogonal on-off-based near-far-resistant detection with diversity technique in UWB systems

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3 Author(s)
Cheng, C.-H. ; Inst. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi ; Lin, J.-Y. ; Wen, J.-H.

A convenient signalling scheme, called orthogonal on-off (O3), together with a simple one-shot linear decorrelating detector (LDD) and a RAKE bank, is adopted in asynchronous ultra- wideband (UWB) systems. The performance of the proposed system is evaluated over multipath fading channels. This investigation also analyses mathematically the effect of the maximal-ratio combining diversity technique on the O3UWB LDD performance over lognormal fading channels. The analytical and simulation results indicate that the diversity technique significantly improves the performance of the O UWB LDD scheme over fading channels, and the proposed receiver still demonstrates a better near-far-resistant property than a conventional UWB receiver.

Published in:

Communications, IET  (Volume:1 ,  Issue: 5 )