公开(公告)号：US06760393B1

公开(公告)日：2004-07-06

申请号：US09564683

申请日：2000-05-04

申请人： Jalal Alisobhani ,  Donald K. Leimar ,  Richard Kai-Tuen Woo ,  Mark Philip Kaplan

发明人： Jalal Alisobhani ,  Donald K. Leimar ,  Richard Kai-Tuen Woo ,  Mark Philip Kaplan

IPC分类号： H04L700

CPC分类号： H04L27/22 ,  H04B1/707 ,  H04L27/2017 ,  H04L2027/0028 ,  H04L2027/0055

摘要： A communication device includes a transmitter and receiver. The transmitter includes an M-ary encoder configured to generate an M−1 number of distinctive symbols each comprising k bits. M is equal to 2k and k is a positive integer. The transmitter also includes a code generator configured to produce spread spectrum codeword sequences based on the symbols generated by the M-ary encoder and based on a first and a second Gold code polynomials. The transmitter sends a radio signal based on the spread spectrum codeword sequences. The receiver is configured to receive the radio signal. The receiver includes a first shift register configured to receive an input signal generated based on the received radio signal and a second shift register configured to receive and circularly shift a locally generated codeword sequence that is identical to the codeword sequence used to encode the symbols.

摘要翻译： 通信设备包括发射机和接收机。 所述发射机包括M元编码器，所述M元编码器被配置为产生每个包括k位的M-1个不同符号。 M等于2k，k是正整数。 发射机还包括码发生器，其被配置为基于由M元编码器产生的符号并且基于第一和第二Gold码多项式来产生扩频码字序列。 发射机基于扩频码字序列发送无线电信号。 接收机被配置为接收无线电信号。 接收机包括：第一移位寄存器，被配置为接收基于所接收的无线电信号生成的输入信号;以及第二移位寄存器，其被配置为接收和循环移位与用于编码符号的码字序列相同的本地生成的码字序列。