Trellis-coded complementary code keying for high-rate wireless LANsystems |
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| Authors: | Tzi-Dar Chiueh Shu-Mei Li |
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| Affiliation: | Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei ; |
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| Abstract: | In high-rate wireless LAN, complementary code keying (CCK) is adopted in the IEEE 802.11b standard to support data rates up to 11 Mbps, much higher than the 2-Mbps data rate in the previous wireless LAN standard. Due to less-than-ideal characteristics of the CCK codewords, the CCK performs quite poorly in large-delay-spread multipath channels. In this paper, a new modulation scheme that combines the trellis coding with the CCK modulation is proposed. This scheme is shown, through simulation, to achieve much better error rate performance in medium-to-large channel delay spread environments |
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