Invention Grant
- Patent Title: Hybrid-ARQ (HARQ) with scrambler
- Patent Title (中): 混合ARQ(HARQ)与扰频器
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Application No.: US12686929Application Date: 2010-01-13
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Publication No.: US08392781B2Publication Date: 2013-03-05
- Inventor: Anuj Batra , Deric W. Waters , Srinath Hosur
- Applicant: Anuj Batra , Deric W. Waters , Srinath Hosur
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Steven A. Shaw; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: G08C25/02
- IPC: G08C25/02 ; H03M13/00

Abstract:
Embodiments of the invention provide a system and method of hybrid automatic repeat-request (HARQ) processing. A viterbi decoder is coupled to and follows a descrambler. After the signal has been de-scrambled, it can be stored in a memory in case it needs to be recombined with another packet. This means that the log-likelihood ratios LLRs for each transmitted bit are stored in memory using a finite number of bits (for example, between 4 and 12 bits). If the packet that is currently being processed contains retransmitted information, then the de-scrambled output stored from a previous packet containing the same information can be loaded and combined with the current packet.
Public/Granted literature
- US20100180173A1 Hybrid-ARQ (HARQ) with Scrambler and Diversity Public/Granted day:2010-07-15
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