Designment and implementation of cognitive ultra wideband wireless communication system

作者：Xiong Hai Liang^*; Ma Pi Ming; Du Zheng Feng; Zheng Lai Bo; Yuan Dong Feng

来源：Systems Engineering-Theory & Practice, 2014, 34(7): 1911-1915.

• Detect and avoid
• Interference mitigation
• M-ary spread spectrum
• Narrow band interference
• Power spectrum density
• Pseudo noise sequence
• Spread spectra
• Ultra wideband wireless communication systems

To improve the coexistence performance between ultra wideband (UWB) and incumbent wireless radio, a novel M-ary spread spectrum UWB communication scheme based on cognitive radio (CR) is investigated. Unlike DS-UWB, M quasi-orthogonal pseudo noise (PN) sequences appear randomly in M-ary spread spectrum UWB signal, its spectrum is smoother than DS-UWB signal, and close to white noise. So M-ary UWB radio can obtain strong anti-jamming, anti-interception performance and the bit error rate (BER) is also improved with the increase of M. Meanwhile, the proposed spectrum sensing and interference mitigation scheme can resist the strong narrowband interference effectively. The numerical results have validated the expected performance and properties.

• 出版日期2014