Abstract
AbstractIn the fifth generation (5G) wireless communication systems, a majority of the traffic demands are contributed by various multimedia applications. To support the future 5G multimedia communication systems, the massive multiple‐input multiple‐output (MIMO) technique is recognized as a key enabler because of its high spectral efficiency. The massive antennas and radio frequency chains not only improve the implementation cost of 5G wireless communication systems but also result in an intense mutual coupling effect among antennas because of the limited space for deploying antennas. To reduce the cost, an optimal equivalent precoding matrix with the minimum number of radio frequency chains is proposed for 5G multimedia massive MIMO communication systems considering the mutual coupling effect. Moreover, an upper bound of the effective capacity is derived for 5G multimedia massive MIMO communication systems. Two antennas that receive diversity gain models are built and analyzed. The impacts of the antenna spacing, the number of antennas, the quality‐of‐service (QoS) statistical exponent, and the number of independent incident directions on the effective capacity of 5G multimedia massive MIMO communication systems are analyzed. Comparing with the conventional zero‐forcing precoding matrix, simulation results demonstrate that the proposed optimal equivalent precoding matrix can achieve a higher achievable rate for 5G multimedia massive MIMO communication systems. Copyright © 2016 John Wiley & Sons, Ltd.
Highlights
As various wireless multimedia applications are getting more and more popular, the demand for wireless traffic is increasing rapidly, and the massive multi-input-multioutput (MIMO) technology has been proposed as a key technology for the generation (5G) wireless communication systems [2,3,4], facilitating to guarantee the increasing demand of user QoE (Quality of Experience) [5, 6]
Motivated by the above gaps, we propose an optimal equivalent precoding matrix to reduce the cost of radio frequency (RF) chains in 5G massive MIMO multimedia communication systems and derive the upper bound of effective capacity with quality of service (QoS) constraints
We demonstrate the performance of the multimedia oriented massive MIMO communication systems in terms of the receive diversity gain as well as the effective capacity, where both effects of the QoS statistical exponent and mutual coupling are evaluated
Summary
As various wireless multimedia applications are getting more and more popular, the demand for wireless traffic is increasing rapidly, and the massive multi-input-multioutput (MIMO) technology has been proposed as a key technology for the generation (5G) wireless communication systems [2,3,4], facilitating to guarantee the increasing demand of user QoE (Quality of Experience) [5, 6]. Rare efforts has been made to study the effective capacity of massive MIMO multimedia wireless communication systems which consider the QoS constraint and mutual coupling effect. Motivated by the above gaps, we propose an optimal equivalent precoding matrix to reduce the cost of RF chains in 5G massive MIMO multimedia communication systems and derive the upper bound of effective capacity with QoS constraints. 1. We define the receive diversity gain to analyze how the mutual coupling influence the performance of the rectangular antenna arrays in the massive MIMO wireless communication systems. 3. We refer to the QoS statistical exponent constraint and the mutual coupling effect, derive the upper bound of effective capacity for 5G massive MIMO multimedia communication systems.
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