Bit and Power Allocation Algorithm for OFDM UWB Systems

摘要：

　　Ultra-wide-band (UWB) is a promising short-range indoor wireless communication technology for large communication capacity,high transmission rate,low power consumption,etc.Multi-band orthogonal frequency-division multiplexing ultra-wide-band (MB-OFDM UWB) system can achieve much higher anti-noise capability and flexibility.However,the transmission power of UWB systems is strictly restricted for avoiding the interference with other wireless communication systems existing in the same frequency spectrum range.It is necessary that adequately utilizes channel estimation to allocate bit and power effectively.According to the change of channel gain,UWB systems modify the allocation factor to optimize the performance of systems and reduce power allocation remainder.Simulation shows modified bit-power allocation algorithm can enhance power allocation efficiency.Furthermore,it is found that the power remainder of modified allocation factor algorithm is less influenced by the bit error rate.

关键词： UWB OFDM bit-power allocation bit error rate

作者: Haiyan Li

作者单位: School of Information Engineering Lanzhou University of Finance and Economics,Lanzhou,730020,China

会议类型: 国际会议

会议名称: 2013 2nd international Conference on Opto-Electronics Engineering and Materials Eesearch(2013第二届光电工程与材料研究国际会议)(OEMR2013)

会议地点: 郑州

会议语种:英文

页码: 1271-1276

在线出版日期: 2013-10-19（万方平台首次上网日期，不代表论文的发表时间）