基于MB-OFDM的多媒体传感器网络峰均比特性研究  

Research on PAPR performance based on MB-OFDM in multimedia sensor networks

作　　者：刘明珠[1] 于淇 修德斌[3] 杨莘元[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001 [2]黑龙江广播电台技术部,黑龙江哈尔滨150001 [3]哈尔滨理工大学测控技术与通信工程学院,黑龙江哈尔滨150080

出　　处：《传感器与微系统》2008年第5期52-54,57,共4页Transducer and Microsystem Technologies

基　　金：黑龙江省科研计划资助项目(11513038)

摘　　要：针对多媒体无线传感器网络数据处理和无线数据传输中信息量大、功耗限制严等具体问题,提出采用宽带数据传输技术——多频带正交频分复用(MB-OFDM)调制技术实现对大量多媒体传感信息的高速、可靠和实时处理。通过分析OFDM调制技术特点,研究其峰均功率比(PAPR)特性,提出了有效改善PAPR的插入相位识别码元序列技术方案。仿真结果表明:该方案可以用于提高多媒体传感器网络数据传输的可靠性,减少频带资源占用,减小系统发射功耗。For the requirement of large number of information needs to be transmitted and the restriction of power consumption in the data processing in multimedia wireless sensor networks. One of broadband data transmit technologies--multi-band orthogonal frequency division multiplexing（MB-OFDM） modulation technology is used. OFDM modulation can realize the high speed, accuracy, and real time processing for the large number of multimedia information. OFDM modulation performances is analyzed, and its peak-to-average power ratio （PAPR） is also investigated. Phase identification coding sequence method is proposed to improve the PAPR performance of OFDM modulation. Simulation shows that the new method can increase the reliability of transmission in multimedia sensor networks, save the frequency resource, and it also can diminish the system power consumption.

关 键 词：传感器网络 正交频分复用 峰均功率比 相位识别编码 

分 类 号：TN913.21[电子电信—通信与信息系统]