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Device-to-Device Aided Cooperative Relaying Scheme Exploiting Spatial Modulation: An Interference Free Strategy.

Md Shahriar Kamal1, Md Fazlul Kader1, S M Riazul Islam2

  • 1Department of Electrical and Electronic Engineering, University of Chittagong, Chittagong 4331, Bangladesh.

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|December 15, 2020
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Summary
This summary is machine-generated.

A new dual-hop device-to-device cooperative relaying strategy using spatial modulation (D2D-CRS-SM) enables interference-free communication. This novel approach enhances spectral efficiency for cellular users without fixed power allocation.

Keywords:
bit error ratedevice-to-device communicationinterference free communicationsspatial modulationspectral efficiency

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Area of Science:

  • Wireless Communications
  • Signal Processing
  • Information Theory

Background:

  • Cooperative relaying strategies enhance wireless network performance.
  • Spatial modulation (SM) offers efficient use of antenna resources.
  • Device-to-device (D2D) communication improves spectral efficiency and reduces base station load.

Purpose of the Study:

  • To propose a novel interference-free dual-hop device-to-device (D2D) aided cooperative relaying strategy (CRS) based on spatial modulation (SM), termed D2D-CRS-SM.
  • To investigate two scenarios for information reception at the near user (NU) considering different information mapping schemes.
  • To analyze the performance of the proposed D2D-CRS-SM strategy in terms of bit-error rate and spectral efficiency.

Main Methods:

  • The proposed D2D-CRS-SM strategy utilizes spatial modulation (SM) in two phases for information transmission and relaying.
  • Base station (BS) maps information bits to modulation bits and antenna indices in phase-1.
  • Iterative-maximum ratio combining (i-MRC) is employed by the near user (NU) and D2D transmitter (D1) for de-mapping information, and by the far user (FU) and D2D receiver (D2) in phase-2.

Main Results:

  • Interference-free information reception is achieved at each receiving node (NU, D1, FU, D2).
  • The D2D-CRS-SM strategy does not require fixed transmit power allocation.
  • Performance analysis using M-ary phase shift keying and quadrature amplitude modulation demonstrates improved spectral efficiency.

Conclusions:

  • The proposed D2D-CRS-SM strategy effectively enhances wireless communication by eliminating interference.
  • Spatial modulation integrated with D2D and cooperative relaying provides a robust and efficient communication framework.
  • Monte Carlo simulations validate the efficiency and performance gains of the D2D-CRS-SM strategy.