Communication processing method of full duplex MIMO cellular system under non-ideal channel

Abstract

The invention discloses a communication processing method of a full duplex MIMO cellular system under a non-ideal channel. The full duplex MIMO cellular system comprises a plurality of uplink devices,a plurality of downlink devices and a base station. Wherein the uplink devices work in a half-duplex mode, and the uplink and downlink devices are connected and communicated with the base station through an uplink; the base station works in a full-duplex mode, receives information sent by the uplink devices through multiple antennas, and sends the information to the downlink devices at the same frequency; and a joint resource optimization problem is established, the joint resource optimization problem is divided into an uplink and downlink device pairing sub-problem and a power distribution sub-problem, and the uplink and downlink device pairing sub-problem and the power distribution sub-problem are respectively processed and solved to obtain an optimal average rate of uplink and downlinkdevice pairing and uplink and downlink device pairing, thereby distributing and setting a communication relationship between the base station and uplink and downlink devices. The resource optimal distribution method provided by the invention effectively improves the system rate, can resist system performance degradation caused by channel estimation errors, self-interference and same-channel interference, and has the advantage of effective communication under a non-ideal condition.

Description

technical field [0001] The invention relates to the technical field of wireless communication, and considers optimizing the transmission power resource in the cellular network under the non-ideal channel estimation condition. The present invention maximizes the system and rate by combining uplink and downlink equipment pairing and power optimization allocation method. Finally, using the decomposition and gradient projection algorithm, the optimization problem obtained from the modeling is solved to obtain the optimal power allocation and maximize the system speed. Background technique [0002] Full-duplex (Full-duplex, FD) technology can realize simultaneous two-way transmission of data on the same frequency band. Compared with traditional half-duplex (Half-duplex, HD) technology, it can significantly increase spectral efficiency, so Has a broader development prospects. Since the transmitting and receiving are carried out on the same frequency at the same time, the full-du...

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Problems solved by technology

[0004] In order to solve the problems existing in the background technology, it is difficult to obtain accurate channel state information in the actual communication environment, as well as the self-interference of the full-duplex system and the co-channel interference of the cellular system, the present invention proposes a full-duplex channel under non-ideal channels The communication processing method of the MIMO cellular system combines the uplink and downlink device pairing and power allocation to optimize the communication resources, and solves the problems caused by the countermeasure channel estimation error, residual self-interference and co-channel interference to the full-duplex MIMO cellular multi-user system. degraded performance technical issues,

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