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Trellis Tone Modulation Multiple-Access for Peer Discovery in D2D Networks.

Chiwoo Lim1, Min Jang2, Sang-Hyo Kim3

  • 1College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea. ichiwoo@skku.edu.

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|April 21, 2018
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Summary

A new Trellis Tone Modulation Multiple-Access (TTMMA) scheme enhances peer discovery in device-to-device communications. TTMMA significantly increases the number of discoverable devices by optimizing range and capacity.

Keywords:
device-to-device (D2D)discoverymulti-user detectionnon-orthogonal multiple-access (NOMA)trellis tone modulation multiple-access (TTMMA)

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Area of Science:

  • Wireless communication
  • Signal processing
  • Network protocols

Background:

  • Peer discovery is crucial for distributed device-to-device (D2D) communication.
  • Existing methods face limitations in discovery range and capacity.
  • Optimizing discovery performance is essential for D2D network efficiency.

Purpose of the Study:

  • To propose a novel non-orthogonal multiple-access scheme called Trellis Tone Modulation Multiple-Access (TTMMA).
  • To enhance the range and capacity of peer discovery in D2D networks.
  • To introduce advanced multi-user detection techniques for superimposed signals.

Main Methods:

  • Developed TTMMA utilizing single-tone transmission for extended discovery range.
  • Implemented non-orthogonal resource assignment to boost discovery capacity.
  • Proposed a message-passing algorithm with supplementary schemes for multi-user detection.

Main Results:

  • TTMMA achieves a long discovery range due to its low Peak-to-Average Power Ratio (PAPR).
  • The scheme increases discovery capacity through non-orthogonal resource assignment.
  • Approximately 1.5 times more devices were discovered compared to Frequency Division Multiple-Access (FDMA).

Conclusions:

  • TTMMA offers a significant improvement in peer discovery for D2D communication.
  • The proposed scheme effectively balances discovery range and capacity.
  • TTMMA, combined with message-passing demodulation, outperforms conventional FDMA-based discovery methods.