Open AccessReceive diversity based transmission data rate optimization for improved network lifetime and delay efficiency of Wireless Body Area Networks
Author(s) -
K. Senthil Kumar,
R. Amutha,
M. Palanivelan,
D. Gururaj,
S. Richard Jebasingh,
M. Anitha Mary,
Annaian Shanmugam,
V. Savitha,
R Priyanka,
Amruth Balachandran,
H P Adithya,
Asher Shaji,
C Anchana
Publication year - 2018
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0206027
Subject(s) - computer science , body area network , transmission (telecommunications) , energy consumption , quadrature amplitude modulation , transmission delay , bit error rate , data transmission , efficient energy use , wireless network , real time computing , wireless sensor network , wireless , diversity gain , diversity scheme , cooperative diversity , electronic engineering , computer network , telecommunications , fading , engineering , channel (broadcasting) , electrical engineering
Wireless Body Area Network (WBAN) has become the emerging technology due to its ability to provide intelligent and cost-effective healthcare monitoring solution. The biological sensors used in WBAN are energy-constrained and required to be functional for a longer duration. Also, the sensed data should be communicated in reasonable time. Therefore, network lifetime and delay have become the primary concerns in the design of WBAN. In this paper, Receive Diversity based Transmission Data Rate Optimization (RDTDRO) scheme is proposed to improve the network lifetime and delay efficiency of Multi level-Quadrature Amplitude Modulation (M-QAM) based WBAN. In the proposed RDTDRO scheme, minimum energy consumption is ensured by optimizing the transmission data rate with respect to a given transmission distance and number of receive antennas while satisfying the Bit Error Rate (BER) requirements. The performance of proposed RDTDRO is analyzed in terms of network lifetime and delay difference and is compared with conventional Baseline and Rate optimized schemes. The results show that at a transmission distance of 0.3 m, the proposed RDTDRO scheme with a receive diversity order of 4 achieves 1.30 times and 1.27 times improvement in network lifetime over conventional Baseline and Rate optimized schemes respectively. From the results, it is also evident that at a transmission distance of 0.3 m, the proposed RDTDRO scheme with a receive diversity order of 4 is delay efficient as it achieves delay difference of 0.75 μ s and 0.29 μ s over conventional Baseline and Rate optimized schemes respectively.