论文信息 - Chaos-Based Physical Layer Design for WSN Applications

Chaos-Based Physical Layer Design for WSN Applications

Due to their correlation properties, chaotic sequences can be used in direct sequence spread spectrum systems. In this paper the application of these sequences for design of physical layer in wireless sensor networks is presented. In order to mitigate fading the chip interleaving technique is investigated. Theoretical expressions in closed form for the bit error rate (BER) are derived and confirmed by simulation. The signals in the system and all processing are performed in discrete time domain. Simulation results confirmed the derived theoretical expressions. Key-Words: chaos based systems, wireless sensor networks, fading channel, interleavers, BER curves.

Shu Feng | Stevan Berber

[1] S. Berber. Bit error rate measurement with predetermined confidence , 1991 .

[2] Stevan M. Berber,et al. Effect of Rayleigh fading on non-coherent sequence synchronization for multi-user chaos based DS-CDMA , 2010, Signal Process..

[3] Tung-Sang Ng,et al. A novel chip-interleaving DS SS system , 2000, IEEE Trans. Veh. Technol..

[4] Chua-Chin Wang,et al. ZigBee 868/915-MHz Modulator/Demodulator for Wireless Personal Area Network , 2008, IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

[5] John G. Proakis,et al. Mitigating multiple access interference and intersymbol interference in uncoded CDMA systems with chip-level interleaving , 2002, IEEE Trans. Wirel. Commun..

[6] Pascal Chargé,et al. Robust synchronization for asynchronous multi-user chaos-based DS-CDMA , 2009, Signal Process..

[7] Stevan M. Berber,et al. Fading mitigation in interleaved chaos-based DS-CDMA systems for secure communications , 2011 .

[8] David W. Lin,et al. Novel analytical results on performance of bit-interleaved and chip-interleaved DS-CDMA with convolutional coding , 2005, IEEE Transactions on Vehicular Technology.