Relay Technology with Unequal Emission Power: Multi-mode Relay

Abstract

Relay technology can enlarge the coverage of cellular network, improve the spectral efficiency, and enhance the robustness of communication system. It has been one of the most striking areas in recent years. In this paper we discussed the relay technology with one-way relay and two-way relay, introduced two kinds of relay techniques: amplify-and-forward (AF), and Decode-and-Forward (DF). Then based on two-way amplify-and-forward relay, we derived the amplify factors of unequal emission power relay.