A Survey on MIMO Transmission with Discrete Input Signals: Technical Challenges, Advances, and Future Trends
Yongpeng Wu, Chengshan Xiao, Zhi Ding, Xiqi Gao, and Shi Jin

TL;DR
This survey comprehensively reviews MIMO transmission techniques with discrete input signals, highlighting recent advances, challenges, and future trends, especially for 5G and multiuser systems, emphasizing practical design considerations.
Contribution
It provides the first unified framework for low complexity MIMO transmission schemes suitable for massive MIMO in 5G, and discusses adaptive strategies based on channel conditions.
Findings
Unified low complexity transmission framework for massive MIMO
Adaptive transmission strategies based on channel conditions
Extensive survey of multiuser MIMO transmission designs
Abstract
Multiple antennas have been exploited for spatial multiplexing and diversity transmission in a wide range of communication applications. However, most of the advances in the design of high speed wireless multiple-input multiple output (MIMO) systems are based on information-theoretic principles that demonstrate how to efficiently transmit signals conforming to Gaussian distribution. Although the Gaussian signal is capacity-achieving, signals conforming to discrete constellations are transmitted in practical communication systems. As a result, this paper is motivated to provide a comprehensive overview on MIMO transmission design with discrete input signals. We first summarize the existing fundamental results for MIMO systems with discrete input signals. Then, focusing on the basic point-to-point MIMO systems, we examine transmission schemes based on three most important criteria for…
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Cooperative Communication and Network Coding · Advanced Wireless Communication Techniques
