发明授权
US06882679B2 Extension of wireless local area network communication system to accommodate higher data rates while preserving legacy receiver features
有权
扩展无线局域网通信系统以适应更高的数据速率，同时保留传统的接收机功能
- 专利标题： Extension of wireless local area network communication system to accommodate higher data rates while preserving legacy receiver features
- 专利标题（中）： 扩展无线局域网通信系统以适应更高的数据速率，同时保留传统的接收机功能
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申请号： US09753048申请日： 2000-12-29
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公开(公告)号： US06882679B2公开(公告)日： 2005-04-19
- 发明人: V. Srinivasa Somayazulu , Srinivas Kandala , John M. Kowalski , Chan K. Park
- 申请人： V. Srinivasa Somayazulu , Srinivas Kandala , John M. Kowalski , Chan K. Park
- 申请人地址： US WA Camas
- 专利权人： Sharp Laboratories of America, Inc.
- 当前专利权人： Sharp Laboratories of America, Inc.
- 当前专利权人地址： US WA Camas
- 代理机构： Chernoff, Vilhauer, McClung & Stenzel, LLP
- 主分类号： H04B1/69
- IPC分类号： H04B1/69 ; H04B15/00 ; H04J13/16 ; H04K1/00 ; H04L27/20
摘要：
In a direct sequence spread spectrum data communication system an information bit is mixed with a pseudorandom noise or spreading code to produce modulated codeword for transmission. A method of bandwidth efficient M-ary phase shift key modulation encoding at least 16 bits of data to a single codeword is disclosed for extending the data rate of a spread spectrum system. Interoperability with legacy devices is maximized by maintaining structural similarity between the modulated waveforms of the extended data rate and legacy systems.