Vehicle to vehicle (V2V) communication has gained its importance in recent years. In this work we consider the index coding problem (ICP) over noisy channel in V2V communication phase of message dissemination. The ICP in V2V communication is considered as device to device ICP with transmitting nodes as receiving nodes also. An achievable solution for index coding problem in V2V communication is proposed considering vehicles with same download capability. This solution is used in noisy broadcast scenario over AWGN channel and the broadcast vectors are mapped to suitable M-PSK signal constellations to save bandwidth, thus increasing the bandwidth efficiency. An algorithm is proposed to derive suitable mapping of the broadcast vectors to M-PSK signal constellation for improving the error performance. Performance improvement in terms of PSK index coding gain is discussed. While one vehicle transmits, the proposed algorithm provides performance improvement for at least one of the remaining vehicles, in most of the scenarios, while not penalizing the other vehicles.

中文翻译：

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车对车通信中的索引编码 PSK 调制


近年来，车对车（V2V）通信变得越来越重要。在这项工作中，我们考虑消息传播的 V2V 通信阶段中噪声信道上的索引编码问题 (ICP)。 V2V 通信中的 ICP 被视为设备到设备的 ICP，发送节点也作为接收节点。考虑到具有相同下载能力的车辆，提出了一种可实现的 V2V 通信中索引编码问题的解决方案。该解决方案用于 AWGN 信道上的噪声广播场景，并将广播矢量映射到合适的 M-PSK 信号星座以节省带宽，从而提高带宽效率。提出了一种算法来导出广播矢量到 M-PSK 信号星座的适当映射，以改善错误性能。讨论了 PSK 索引编码增益方面的性能改进。当一辆车进行传输时，所提出的算法在大多数情况下为至少一辆剩余车辆提供性能改进，同时不会惩罚其他车辆。