Anti-interference ultra-wideband system based on spreading and interleaving  

作　　者：Zhang Shibing Zhang Lijun 

机构地区：[1]Nantong Univ., Nantong 226007, P. R,China [2]Nanjing Univ. of Posts and Telecommunications, Nanjing 210003, P. It. China

出　　处：《Journal of Systems Engineering and Electronics》2007年第2期236-242,共7页系统工程与电子技术（英文版）

基　　金：the National "863" High Technology Research Program of China (2005AA123320);Universities Natural Science Research Project of Jiangsu Province (05KJB510101).

摘　　要：To suppress the interference in the ultra-wideband （AI-UWB） system is a challenging problem. An anti-interference multiband orthogonal frequency-division multiplexing ultra-wideband （AI-UWB） system, based on spreading and interleaving is addressed. It will exploit the frequency diversity across the subcarriers and provide the robustness to narrow-band interference, by spreading the coded bit streams within each sub-band and interleaving across all sub-bands. Simulating results show that the spreading and interleaving provide about 5 dB to 10 dB advantages over the conventional multiband orthogonal frequency-division multiplexing ultra-wideband system in signal-to-interference ratio. Spreading and interleaving is an effective cure for enhancing the robustness to narrowband interference.To suppress the interference in the ultra-wideband （AI-UWB） system is a challenging problem. An anti-interference multiband orthogonal frequency-division multiplexing ultra-wideband （AI-UWB） system, based on spreading and interleaving is addressed. It will exploit the frequency diversity across the subcarriers and provide the robustness to narrow-band interference, by spreading the coded bit streams within each sub-band and interleaving across all sub-bands. Simulating results show that the spreading and interleaving provide about 5 dB to 10 dB advantages over the conventional multiband orthogonal frequency-division multiplexing ultra-wideband system in signal-to-interference ratio. Spreading and interleaving is an effective cure for enhancing the robustness to narrowband interference.

关 键 词：Communications technology ANTI-INTERFERENCE SPREADING INTERLEAVING Ultra-wideband. 

分 类 号：TN919.4[电子电信—通信与信息系统]