Practical Partner Selection of Chip-Interleaved Decode and Forward Cooperation in WSNs Subject to Frequency-Selective Fading

• Published in: Wireless personal communications Vol. 121; no. 1; pp. 557 - 575
• Main Authors: Tian, Jianjie, Berber, Stevan, Zhang, Lei
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2021; Springer Nature B.V
• Subjects: Communications Engineering; Computer Communication Networks; Cooperation; Engineering; Networks; Selective fading; Signal processing; Signal,Image and Speech Processing; WSNs; Chip-interleaving; Partner selection; Decode and forward; Frequency-selective fading
• ISSN: 0929-6212; 1572-834X
• DOI: 10.1007/s11277-021-08650-6

This paper has investigated the feasibility of deploying a decode and forward (DF) cooperative protocol and a chip-interleaving signal processing in combination as a practical energy-saving technique to prolong the lifetime of WSNs operating over AWGN channels subject to frequency-selective Rayleigh fading. This work firstly aims to quantify the BER performance of a chip-interleaved DF (CIDF) cooperation in WSNs. Following, it is extended to analyze an energy efficient CIDF cooperation from the perspective of optimally distributing the transmit power and choosing an ideal cooperating node. Finally, Matlab evaluations of theoretical findings have been provided. Results indicate that the proposed partner selection rules are computationally efficient, and can be easily used by sensor nodes to improve the system’s energy efficiency effectively.