发明授权
- 专利标题: System and method for demodulating associated information channels in direct sequence spread spectrum communications
- 专利标题(中): 用于解调直接序列扩频通信中的相关信息信道的系统和方法
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申请号: US09848500申请日: 2001-05-03
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公开(公告)号: US06987799B2公开(公告)日: 2006-01-17
- 发明人: John G. McDonough , Craig M. Julian
- 申请人: John G. McDonough , Craig M. Julian
- 申请人地址: US TX Dallas
- 专利权人: Texas Instruments Incorporated
- 当前专利权人: Texas Instruments Incorporated
- 当前专利权人地址: US TX Dallas
- 代理商 Ronald O. Neerings; Wade James Brady, III; Frederick J. Telecky, Jr.
- 主分类号: H04B1/69
- IPC分类号: H04B1/69 ; H04B7/216
摘要:
A Direct Sequence Spread Spectrum (DSSS) receiver system (100) combines and orders the soft symbols from associated information channels. The system permits a QPSK channel to be demodulated as a pair of BPSK channels, and the soft symbols of the demodulated BPSK channels to be multiplexed into a single information channel. The receiver system (100) includes a plurality of demodulating fingers (102–106). Each demodulating finger accepts modulation parameters and a sample stream, while supplying soft symbols with indexing information so that information channels can be subsequently multiplexed into a single information channel. A method for ordering the soft symbols of associated information channels in a DSSS system is also provided.
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