具有合作中继功能的认知无线电网络的自适应组合信道网络编码

А.M. Kapiton, R.V. Baranenko, H.V. Sokol, M.Yu. Okhrymenko
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引用次数: 0

摘要

认知无线电是 4G/5G 应用的新技术之一,因此合作中继通信和网络编码被认为是有助于改善其应用前景的某些方法。本研究考虑了向主用户广播数据的多媒体视频流应用主广播系统和辅助合作中继二级认知无线电系统。辅助合作覆盖系统可使用多种错误控制编码方法进行点对点数据重传,如信道编码、网络编码和组合编码方法,以提高系统在不同链路条件下的性能。本文提出了一种用于数据重传的 AC2NC 组合信道网络自适应编码新技术。新的 AC2NC 首先分析信道反馈信息,然后根据目标带宽或传输时间优化选择最佳重传编码技术。这取代了使用单一静态信道或动态信道条件下的网络编码技术。拟议的 AC2NC 提高了系统吞吐量,减少了重传时间,并为辅助系统自身的数据传输提供了更多频谱接入机会。与某些静态编码方法相比,AC2NC在特定信道条件下为认知无线电用户节省的相对吞吐量和时间超过了90%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Adaptive Combined Channel Network Coding for Cognitive Radio Networks with Cooperative Relay
Cognitive radio is one of the new technologies for 4G/5G applications, so cooperative relay communication and network coding are considered as certain methods to help improve their re-spective applications. A primary broadcast system for multimedia video streaming applications that broad¬casts data to primary users and an auxiliary cooperative relay secondary cognitive ra-dio system are considered. The secondary cooperative overlay system can use multiple error control coding methods for point-to-point data retransmission, such as channel coding, network coding, and combi¬ned coding methods to improve system performance under variable link con-ditions. A new technique of adaptive coding of AC2NC combined channel network for data re-transmission is proposed. The new AC2NC first analyzes the channel feedback information and then selects the best retransmission coding technique based on the target bandwidth or trans-mission time optimization. This is instead of using a single static channel or a network coding technique with dynamic channel conditions. The proposed AC2NC improves system through-put, reduces retransmission time, and provides more spectrum access opportunities for the sec-ondary sys¬tem's own data transmissions. AC2NC's relative throughput and time saving capabil-ities for cognitive radio users have been shown to exceed ninety percent, under certain channel conditions, compared to some static coding methods.
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