Power Control for ISI Mitigation in Mobile Molecular Communication

TL;DR

This paper introduces two power control strategies for mobile molecular communication to reduce inter-symbol interference, analyzing their performance in terms of error rate and energy efficiency through simulations.

Contribution

It proposes two novel power control schemes, BCSK-d and BCSK-d-RM, that improve BER performance in mobile molecular communication systems.

Findings

BCSK-d-RM outperforms BCSK-d and standard BCSK in BER.

Both schemes reduce inter-symbol interference effectively.

BCSK-d offers lower complexity with slightly lower performance.

Abstract

In mobile molecular communication (MC), inter-symbol interference (ISI) can be mitigated by power control, requiring accurate estimates of the distance from transmitter to receiver. We present two power control strategies based on binary concentration shift keying (BCSK), namely BCSK with power control based on distance (BCSK-d), and BCSK with power control jointly considering distance and residual molecules in the channel (BCSK-d-RM). Performance of BCSK-d and BCSK-d-RM are analyzed in terms of the bit error rate (BER), the average energy consumption per bit, and the optimal detection threshold. Simulation results show that BCSK-d-RM and BCSK-d outperform BCSK in BER with the varying distance and the number of transmitted molecules. As BCSK-d-RM has higher performance, while BCSK-d has lower complexity, these schemes present a useful design tradeoff for mobile MC.