用于块衰落信道的广义集成交织极化码
GII-Polar Codes for Block Fading Channels
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中文总结 AI 辅助
针对块瑞利衰落信道提出广义集成交织（GII）-极化码，通过嵌套码本耦合两个极化码字，并行解码降低时延，提升纠错性能。
中文摘要 AI 辅助
极化码被证明是能达到容量的码，逐渐应用于无线通信。但其连续消除（SC）和连续消除列表（SCL）解码存在时延挑战。本文提出用于块瑞利衰落信道的广义集成交织（GII）-极化码，降低解码时延并具备良好性能。
英文摘要
Polar codes are proven to be capacity-achieving codes, being gradually practiced in wireless communications. However, their successive cancellation (SC) and successive cancellation list (SCL) decoding incur latency challenge especially for long codes. This paper proposes the generalized integrated interleaved (GII)-polar codes for block Rayleigh fading channels, yielding both reduced decoding latency and competent decoding performance. Under the GII paradigm, two consecutive polar codewords of length $N$ are virtually coupled through a nested codebook which has a lower dimension, capable of correcting more errors. The component polar codes are known as interleaves of a GII-polar code. If decoding of an interleave fails, it can be projected into the decoding of the nested one, enabling richer error patterns to be corrected by each interleave. Since decoding of the interleaves can be performed in parallel, GII-polar codes yield a reduced decoding latency over a single polar code of length $2N$. Our simulation results validate both the decoding latency and performance merits of the proposed coding scheme under block Rayleigh fading channel.
