公开(公告)号：US09100250B2

公开(公告)日：2015-08-04

申请号：US14341181

申请日：2014-07-25

Applicant: InterDigital Technology Corporation

Inventor： John D. Kaewell, Jr.

IPC: H04B1/00 ,  H04L27/20 ,  H04B1/62 ,  H04B1/7097 ,  H04B1/69 ,  H04B1/711 ,  H04L27/00 ,  H04B1/707

CPC classification number: H04L27/20 ,  H04B1/62 ,  H04B1/69 ,  H04B1/7097 ,  H04B1/711 ,  H04B2001/70724 ,  H04B2201/696 ,  H04B2201/709709 ,  H04L2027/0022

Abstract: A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.

Abstract translation: CDMA通信系统包括信号处理器，其以不同的速率将语音和非发音信号编码成数据，例如， 数据速率为8kbps，16kbps，32kbps或64kbps作为I和Q信号。 信号处理器根据信号的类型或响应于设定的数据速率来选择特定的数据速率。 当信号被接收和解调时，基带信号处于芯片级。 信号的I和Q分量都使用扩展期间使用的pn序列的共轭进行解扩，将信号返回到符号级。 载波偏移校正在符号级进行。 因此，需要较低的总体处理速度。