Performance of asynchronous DS-UWB communication system on Rayleigh multipath and AWGN channel versus spreading sequences

2012 IEEE Vehicular Technology Conference (VTC Fall)

et al. 2012

In this paper, we investigate the performance of the orthogonal complementary code (OCC) based direct sequence ultra wideband (DS-UWB) system. OCC has perfect partial autocorrelation and cross-correlation characteristics. With the application of OCC in DS-UWB system, we can offer multiple access interference (MAI) free operation in both synchronous and asynchronous transmissions over MAI-AWGN channel. Theoretical analysis illustrates that multipath interference (MI) as well as MAI can be also mitigated over lognormal multipath fading channels in OCC based DS-UWB system. Our simulation also shows the superiority of the OCC based DS-UWB to unitary code based system. Keywords-ultra-wide band (UWB); orthogonal complementary code (OCC); multiple access interference (MAI); multipath interference (MI)

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Section: Introductionmentioning

confidence: 99%

“…[4] investigated the influence of the different spreading sequences on asynchronous DS-UWB system. However, the spreading codes studied in [4] are all unitary codes, such as i.i.d, Gold and Kasami sequences. [5] proposed ternary complementary sets based UWB system which could alleviate MI and MAI.…”

Section: Introductionmentioning

confidence: 99%

MAI and MI Performance of the Orthogonal Complementary Code Based DS-BPAM UWB System

2012 IEEE Vehicular Technology Conference (VTC Fall)

et al. 2012

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Multiple access interference and multipath interference analysis of orthogonal complementary code‐based ultra‐wideband systems over multipath channels

Wang

et al. 2013

Int J Communication

SUMMARY In order to alleviate multiple access interference and multipath interference of ultra‐wideband (UWB) system, we propose the orthogonal complementary code (OCC)‐based direct‐sequence UWB system and offset‐stacking (OS)‐UWB system. OCC has perfect partial autocorrelation and cross‐correlation characteristics. With the application of OCC in UWB system, we can obtain better performance in multiple access interference and multipath interference. The proposed OS‐UWB structure can also achieve variable data rate transmission because of its innovative OS spreading technique. Theoretical analysis and simulation results show that the proposed UWB system can achieve excellent performance and outperform the unitary code‐based direct‐sequence UWB system. Copyright © 2013 John Wiley & Sons, Ltd.

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Performance analysis of orthogonal complementary code based Offset-Stacking UWB system

2012 International Symposium on Communications and Information Technologies (ISCIT)

Wang

et al. 2012