Selection Combining-based Packet Combining Schemes for Multi-path Diversity System

Abstract

In multi-path diversity system, the receiver receives several signals bearing the same information, through distinct and independent fading channels. The packets traversing through independent and distinct paths would undergo different degree of fading. Thus, even if the copy of the packet is distorted badly in one path, the copy received from other paths might be lesser distorted; so by combining the copies of the packet, the correct copy of the packet could be retrieved. In this paper, selection combining-based packet combining scheme for multi-path diversity system have been proposed. In the proposed scheme, a packet is transmitted to the receiver via $$m$$ different paths, where $$m \ge 2$$ . At the receiver, erroneously received copies of the packet are combined to recover the correct copy of the packet. The proposed selection combining-based packet combining scheme is analyzed and studied using simulation on MatLab. It was observed experimentally that proposed scheme has superior performance than that of conventional packet combining schemes. The superior performance of the proposed scheme with selection combining scheme can be attributed to diversity achieved using multi-path transmission.