We propose a novel coupling technique for the design of polar codes of length N, making them decodable through a sliding window of size M < N. This feature allows to reduce the computational complexity of the decoder, an important possibility in wireless communication downlink scenarios. Our approach is based on the design of an ad-hoc kernel to be inserted in a multi-kernel polar code framework; this structure enables the sliding window decoding of the code. Simulation results show that the proposed sliding window polar codes outperform the independent blocks transmission in the proposed scenario, at the cost of a negligible decoding overhead.

翻译：我们为设计长度为N的极地代码提出了一种新的混合技术,使这些代码可以通过一个大小为M < N的滑动窗口去解码。这个功能可以降低解码器的计算复杂性,这是无线通信下行线情景中的一种重要可能性。我们的方法是基于设计一个临时热内核,将插入多内核极地代码框架;这一结构使该代码的滑动窗口解码。模拟结果表明,拟议的滑动窗口极地代码比拟议情景中独立的区块传输要好,成本是微不足道的解码间接费用。