Paper Info
Title
Performance analysis of spatial multiplexing MIMO-MFSK based on energy detection for fast-fading environments
Abstract
In fast-fading scattering environments such as high-speed rail and low-altitude communications, mobile communication systems need to quickly and robustly estimate and equalize fast-fading, time-varying channels. Under these circumstances, noncoherent multiple-input multiple-output (MIMO) has received attention in recent years, since it is less influenced by factors such as phase fluctuations and has fewer requirements for channel estimation and synchronization. Spatial multiplexing MIMO-MFSK based on energy detection is different from conventional noncoherent MIMO in that it can achieve higher spatial multiplexing gain in the independent distribution of channel fading statistics. At the receiver, partial real channel state information (CSI) is available, which can improve the capacity while ensuring the reliability of the link. With partial real CSI replacing instantaneous CSI, the system performance is inferior to conventional coherent MIMO under the influence of noise. As a result, it is necessary to analyze its theoretical detection performance. By energy detection, the noise of the MIMO-MFSK system conforms to the generalized gamma distribution. On the basis of this distribution, the optimal decision rule of the system and the symbol error rate (SER) formula are derived. Additionally, we investigate the signal-dependent noise problem of minimum Euclidean distance detection. Numerical results show that the SER formula fits well with the simulation results under the condition of a high signal-to-noise ratio.
Year
DOI
Venue
2022
10.1186/s13638-022-02116-4
EURASIP Journal on Wireless Communications and Networking
Keywords
DocType
Volume
Noncoherent MIMO, Multiple frequency-shift keying (MFSK), Energy detection, Generalized gamma distribution, SER
Journal
2022
Issue
ISSN
Citations 
1
1687-1499
0
PageRank 
References 
Authors
0.34
23
4
Name
Order
Citations
PageRank
Shuaijun Li100.34
Hongbing Qiu291.90
Lin Zheng387.26
Chao Yang48722.49