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针对IEEE802.11a协议中的同步问题进行了研究和分析。在不同的使用环境、不同的信道特性以及不同信噪比的情况下对同步性能进行了仿真,结果表明采用了OFDM调制技术的IEEE802.11a协议可以较好地克服多径衰落。同时由于是在5GHz频段的无线信道中传输信号,协议对帧结构进行精心设计以保证在高速率的情况下能有较好的同步性能。
The IEEE802.11a protocol for synchronization problems were studied and analyzed. The simulations of the synchronization performance under different operating environments, different channel characteristics and different signal-to-noise ratios show that the IEEE802.11a protocol using OFDM modulation technology can better overcome the multipath fading. At the same time as the signal is transmitted in the wireless channel of 5GHz frequency band, the protocol designs the frame structure carefully to ensure better synchronization performance under the condition of high speed.