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Extending the range of the 802.11G WLAN through improved synchronization techniques

机译:通过改进的同步技术扩展802.11G WLAN的范围

摘要

Orthogonal Frequency Division Multiplexing (OFDM) allows for a spectrally efficient means of obtaining high data rates while simultaneously combating the effects of fading. The multi-carrier spectrum of OFDM mandates that the receiver accomplish a number of synchronization tasks to successfully demodulate the OFDM signal, including the critical requirement to synchronize the carrier frequency. Additional synchronization tasks include frame synchronization (packet detection), synchronization of the carrier phase, and symbol timing. Improved receiver synchronization algorithms may hold the prospect of superior performance; specifically allowing successful demodulation by the receiver at an extended range. This thesis discusses several promising synchronization algorithms. Furthermore, a performance analysis of these algorithms is conducted at low signal to noise ratio (SNR) in an AWGN channel using MATLAB.
机译:正交频分复用(OFDM)允许在频谱上有效的手段来获得高数据速率,同时又能抵抗衰落的影响。 OFDM的多载波频谱要求接收机完成许多同步任务以成功解调OFDM信号,包括同步载波频率的关键要求。其他同步任务包括帧同步(数据包检测),载波相位同步和符号定时。改进的接收机同步算法可以保持更高的性能。特别是允许接收器在扩展范围内成功解调。本文讨论了几种有前途的同步算法。此外,使用MATLAB在AWGN通道中以低信噪比(SNR)进行了这些算法的性能分析。

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    Sardana Vikram;

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  • 年度 2007
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