Abstract

Current half duplex wireless communications are reaching the Shannon limit. Previous works have studied fullduplex (FD) wireless communications medium access control (MAC) schemes to double a communication capacity. However, general analysis and guideline for FD wireless communications MAC protocols design have not been shown. In this paper, the role of MAC in FD communication enabled wireless network are assessed by theoretical analysis. We show an optimal MAC design for wireless local area network (LAN) in which FD capable user terminals and only HD capable user terminals coexist. From our analysis, we show that a FD capable access point (AP) is enable to change approximately 90 % HD communications to FD communication, even when there are only HD capable user terminals.

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