发明公开
- 专利标题: Method and apparatus for communicating interleaved data
- 专利标题(中): 交换数据的方法和装置
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申请号: EP93110651.2申请日: 1993-07-03
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公开(公告)号: EP0582827A3公开(公告)日: 1995-10-18
- 发明人: Paik, Woo H. , Fox, John M. , Lery, Scott A.
- 申请人: GENERAL INSTRUMENT CORPORATION OF DELAWARE
- 申请人地址: 181 West Madison Street Chicago, Illinois 60602 US
- 专利权人: GENERAL INSTRUMENT CORPORATION OF DELAWARE
- 当前专利权人: GENERAL INSTRUMENT CORPORATION OF DELAWARE
- 当前专利权人地址: 181 West Madison Street Chicago, Illinois 60602 US
- 代理机构: Hoeger, Stellrecht & Partner
- 优先权: US927827 19920810
- 主分类号: H03M13/22
- IPC分类号: H03M13/22 ; H03M13/12 ; H04L7/04 ; H03M13/00
摘要:
An interleaver (34) processes information in a pseudorandom order to provide pseudorandom interleaved data for communication to a deinterleaver (42). The pseudorandom interleaved data is processed at the deinterleaver (42) in a pseudorandom order corresponding to that used at the interleaver (34) means, to recover the original information. The pseudorandom processing at the deinterleaver is synchronized with the pseudorandom processing at the interleaver on a trial and error basis. In one embodiment, full synchronization occurs when a Viterbi decoder (44) receiving data from the deinterleaver has a renormalization rate within a designated threshold and when enough synchronization words are detected in data output from the deinterleaver to meet a predetermined criterion. In another embodiment, a timer is used to initiate a new starting address for the pseudorandom processing at the deinterleaver during successive time intervals. Synchronization is achieved when a start address is found that results in the detection of enough synchronization words in data output from the deinterleaver to meet a predetermined synchronization criterion.
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