Invention Grant
US08213485B2 High rate CDMA wireless communication system using variable sized channel codes 有权
高速CDMA无线通信系统使用可变大小的信道码

High rate CDMA wireless communication system using variable sized channel codes
Abstract:
Method and apparatus for high rate code-division multiple access wireless communication is described. Each of a channel encoded data is modulated by an associated code having a small number of pseudo-noise spreading chips per orthogonal waveform period, thus producing a set of streams of modulated symbols. Each of the set of streams of modulated symbols is then gain adjusted, and combined to yield two streams of combined symbols. The combination is the set of streams is carried out to reduce a peak-to-average ratio of the transmission. The resulting two combined symbol streams are modulated by a complex multiplyer using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission.
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