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PAPR/ENOB对通信系统性能影响的仿真方法

Simulation Method of PAPR/ENOB Effect WLAN Performance
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摘要 由于OFDM系统PAPR较高,因而对模拟器件的性能要求比较严格。考虑到802.11.g系统的兼容性,可采样限幅处理降低PAPR。讨论了OFDM系统设计时,模拟器件非线性对PAPR的影响。给出了进行ADC／DAC和放大器仿真的模型和方法,设计了一个802.11.g系统模拟器件性能的测试系统。利用该测试系统得到了802.11.g系统中模拟器件选择的一些参数要求。并利用该方法进行802.11.g定点性能仿真。通过上述测试,为整个系统的硬件设计提供了先期验证。 It is overviewed the method of reducing OFDM PAPR and analyzed the feature of the 802.11.g. We then conclude that the oversamples clipping could reduce the PAPR of the 802.11.g. Because of the large PAPR, this system requires the analog devices have high performance. The feature of ADC/DAC and amplifier will affect the performance of DSP systems. We analyze their feature and simulative models, with which we investigate the performance of wireless local area network system based on IEEE 802.11 g standard implemented with fix point DSPs. The amplifier and Effective Number of Bits (ENOB) model are used to simulate the fix point performance of DSP. We will provide the test results with different device's parameters which are important for system designers.
作者 王俊 孙进平 杨晨阳
机构地区 北京航空航天大学电子信息工程学院
出处 《系统仿真学报》 EI CAS CSCD 北大核心 2005年第1期231-233,237,共4页 Journal of System Simulation
关键词 ADC/DAC 限幅 有效位数 WLAN ADC/DAC clipping ENOB WLAN
分类号 V [航空宇航科学技术]
  • 相关文献

参考文献7

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系统仿真学报
2005年 第1期

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