NDLI: BER performance of an MRT-HQAM system over Rayleigh fading channels

Content Provider	IET Digital Library
Author	Evans, Adam Muhammad Quazi, Tahmid Xu, Hongjun
Abstract	Hierarchical quadrature amplitude modulation (HQAM) allows for transmission of multiple classes of data (such as voice, video and file transfer), provides flexibility in terms of coverage area and allows for network upgrades while maintaining backwards compatibility. However, the addition of hierarchical layers leads to higher-order modulation schemes which make the system increasingly susceptible to noise and fading. To mitigate fading while maintaining backwards compatibility, maximum ratio transmission (MRT) is incorporated into the HQAM system to maximise signal-to-noise ratio for a given number of diversity branches. This study presents a theoretical bit error rate (BER) performance analysis of an MRT enhanced HQAM (MRT-HQAM) system in Rayleigh fading. The BER performance gains of the proposed system over single-input–single-output and single-input–multiple-output HQAM systems are shown. The HQAM hierarchical modulation parameter is varied and the effects are presented. Furthermore, the authors present the effects of varying the number of antennas on the transmitting and receiving ends and discuss the optimal antenna configuration. The theoretical BER expressions used in the performance analysis are verified using simulation results.
Starting Page	2473
Ending Page	2479
Page Count	7
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 17, Nov (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0676
Journal	IET Communications
Publisher Date	2016-11-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Array BER Performance Gain Bit Error Rate Performance Analysis Diversity Reception Error Statistics Hierarchical Quadrature Amplitude Modulation Higher-order Modulation Scheme HQAM Hierarchical Modulation Parameter Maximum Ratio Transmission Modulation And Coding Method MRT MRT-HQAM System Quadrature Amplitude Modulation Radio Link And Equipment Rayleigh Channel Rayleigh Fading Channel Receiving Antenna Signal to Noise Ratio Single-input-multiple-output HQAM System Single-input-single-output HQAM System Statistics Transmitting Antenna
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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