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Performance Evaluation of Variable Bandwidth Channel Allocation Scheme in Multiple Subcarrier Multiple Access

Nitish RAJORIA, Hiromu KAMEI, Jin MITSUGI, Yuusuke KAWAKITA, Haruhisa ICHIKAWA

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Summary :

Multiple Subcarrier Multiple Access (MSMA) enables concurrent sensor data streamings from multiple wireless and batteryless sensors using the principle of subcarrier backscatter used extensively in passive RFID. Since the interference cancellation performance of MSMA depends on the Signal to Interference plus Noise Ratio of each subcarrier, the choice of channel allocation scheme is essential. Since the channel allocation is a combinatorial problem, obtaining the true optimal allocation requires a vast amount of examinations which is impracticable in a system where we have tens of sensor RF tags. It is particularly true when we have variable distance and variable bandwidth sensor RF tags. This paper proposes a channel allocation scheme in the variable distance and variable bandwidth MSMA system based on a newly introduced performance index, total contamination power, to prioritize indecision cases. The performance of the proposal is evaluated with existing methods in terms of average communication capacity and system fairness using MATLAB Monte Carlo simulation to reveal its advantage. The accuracy of the simulation is also verified with the result obtained from the brute force method.

Publication
IEICE TRANSACTIONS on Communications Vol.E101-B No.2 pp.564-572
Publication Date
2018/02/01
Publicized
2017/08/03
Online ISSN
1745-1345
DOI
10.1587/transcom.2017EBP3016
Type of Manuscript
PAPER
Category
Wireless Communication Technologies

Authors

Nitish RAJORIA
  Keio University
Hiromu KAMEI
  Keio University
Jin MITSUGI
  Keio University
Yuusuke KAWAKITA
  University of Electro-Communications
Haruhisa ICHIKAWA
  University of Electro-Communications

Keyword