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以IEEE802.11b为对象,分析了基于DSSS的WLAN四种数据传输特点,探讨了可实现1Mbit/s、2Mbit/s数据传输的DBPSK-Baker、DQPSK-Baker技术,并重点研究了QPSK-CCK数据高速传输技术,分析和仿真测试结果表明:QPSK-CCK可实现5.5Mbit/s、11Mbit/s的数据传输数率。上述研究结果可作为我们设计基于DSSS无线接入系统的理论依据。
Taking IEEE802.11b as an example, the characteristics of four kinds of data transmission based on DSSS are analyzed. The technology of DBPSK-Baker and DQPSK-Baker which can realize 1Mbit / s and 2Mbit / s data transmission is discussed. The QPSK-CCK data High-speed transmission technology, analysis and simulation test results show that: QPSK-CCK 5.5Mbit / s, 11Mbit / s data transfer rate. The above results can be used as the basis for designing DSSS based wireless access system.