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IEEE Transactions on Broadcasting
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Spatial Modulation Aided Layered Division Multiplexing: A Spectral Efficiency Perspective

Authors: Yu Sun; Jintao Wang; Changyong Pan; Longzhuang He; Bo Ai;

Spatial Modulation Aided Layered Division Multiplexing: A Spectral Efficiency Perspective

Abstract

In this paper, spatial modulation (SM) is introduced to layered division multiplexing (LDM) systems for enlarging the spectral efficiency over broadcasting transmission. Firstly, the SM aided LDM (SM-LDM) system is proposed, in which different layered services utilize SM for terrestrial broadcasting transmission with different power levels. Then a spectral efficiency (SE) analysis framework for SM-LDM systems is proposed, which is suitable for the SM-LDM systems with linear combining. Moreover, the closed-form SE lower bound of SM-LDM systems with maximum ratio combining (MRC) is derived, which is based on this framework. Since the theoretical SE analysis of single transmit antenna (TA) LDM systems with MRC and spatial multiplexing (SMX) aided LDM systems with MRC lacks a closed-form expression, the closed-form SE is also derived for these systems. Monte Carlo simulations are provided to verify the tightness of our proposed SE lower bound. Furthermore, it can be shown via simulations that our proposed SM-LDM systems always have a better SE performance than single-TA LDM systems, which can even outperform the SE of SMX aided LDM (SMX-LDM) systems.

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Subjects by Vocabulary

Microsoft Academic Graph classification: Computer science Spectral efficiency Interference (wave propagation) Multiplexing Upper and lower bounds Spatial multiplexing Signal-to-noise ratio Transmission (telecommunications) Electronic engineering Maximal-ratio combining

Keywords

FOS: Computer and information sciences, Computer Science - Information Theory, Information Theory (cs.IT), Media Technology, Electrical and Electronic Engineering, Layered division multiplexing (LDM); Spatial modulation (SM); terrestrial broadcasting transmission; spectral efficiency (SE)

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    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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