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中文摘要：
基于OFDM系统中短训练符号的相关性，对已有分组检测算法加以改进，提出了一种适用于正交频分复用（orthogonal frequency division multiplexing，OFDM）系统的分组检测算法．仿真结果表明，该算法在各种信噪比下均具有良好的检测能力．此外，对此算法进行了VLSI的优化实现，计算部分的实现方式采用流水线设计的思想，通过优化结构和分时复用内部电路单元，降低了所需电路的面积，提高了系统工作频率．在0．18μm CMOS工艺下，电路可稳定工作在155MHz频率，电路总面积为1034486μm^2．
英文摘要：
Based on the correlation of short training symbols, by improving existing packet detection algorithm, this paper puts forward an packet detection algorithm that is adapted to orthogonal frequency division multiplexing（OFDM） system. The high detection probability of the algorithm under various SNR is verified by computer simulations. An optimum design of the algorithm is also proposed in this paper. A pipeline design method is employed to the implementation of count unit. By optimizing the architecture and multiplexing the internal circuit unit, the area is decreased and the system clock frequency is increased. The circuit can work stability at 155MHz, the total area of the circuit is 1 034 486μm^2 in 0.18μm CMOS technology.
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