Outage-Optimal Power Allocation for Hybrid ARQ with Incremental Redundancy
نویسندگان
چکیده
منابع مشابه
Optimal Incremental-Redundancy Strategy for Type-II Hybrid ARQ
Given a type-II hybrid ARQ scheme, we propose a general solution to find the optimal partitioning of n − k parity bits over at most M transmissions. The solution is in terms of maximizing the average code rate for a given puncturing pattern.
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Two incremental redundancy hybrid ARQ (IR-HARQ) schemes are proposed, analyzed, and compared: one is based on LDPC code ensembles with random transmission assignments, the other is based on recently introduced Raptor codes. A number of important issues, such as rate and power control, Raptor code design, and error rate performance after each transmission on time varying binary-input, symmetrico...
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Hybrid ARQ (HARQ) is well known link adaptation scheme which improves system throughput combining the error correcting codes and retransmission scheme. The incremental redundancy (IR) HARQ transmits parity bits incrementally when the retransmission is requested and normally provides higher throughput than the Chase combining by adaptive transmission in accordance with channel variations. In thi...
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The throughput achievable in truncated Hybrid ARQ protocol (HARQ) using incremental redundancy (IR) in analyzed when transmitting over a block-fading channel whose state is unknown at the transmitter. We allow the transmission lengths to vary, optimize them efficiently via dynamic programming, and show that such a variable-rate HARQ-IR provides gains with respect to a fixedrate transmission in ...
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ژورنال
عنوان ژورنال: IEEE Transactions on Wireless Communications
سال: 2011
ISSN: 1536-1276,1558-2248
DOI: 10.1109/twc.2011.041311.101978