Joint Transmit Antenna Selection and Power Allocation for ISDF Relaying Mobile-to-Mobile Sensor Networks

Area of Science:

• Wireless Communication Networks
• Sensor Networks
• Signal Processing

Background:

• Mobile-to-mobile (M2M) sensor networks face challenges in maintaining reliable communication due to fading channels.
• Incremental-selective decode-and-forward (ISDF) relaying and transmit antenna selection (TAS) are advanced techniques to enhance network performance.

Purpose of the Study:

• To investigate the outage probability (OP) performance of M2M sensor networks employing multiple-relay ISDF with TAS over N-Nakagami fading channels.
• To derive exact closed-form OP expressions for both optimal and suboptimal TAS schemes.
• To formulate and analyze the power allocation problem for optimizing transmit power distribution.

Main Methods:

• Derivation of exact closed-form outage probability expressions for optimal and suboptimal transmit antenna selection (TAS) schemes.
• Formulation of a power allocation problem to optimize transmit power between broadcast and relay phases.
• Numerical simulations to evaluate outage probability performance under various conditions and validate analytical results.

Main Results:

• The optimal TAS scheme demonstrates superior outage probability (OP) performance compared to the suboptimal TAS scheme.
• Exact closed-form expressions for OP were successfully derived for both optimal and suboptimal TAS.
• Power allocation significantly impacts the overall OP performance of the network.

Conclusions:

• The optimal TAS strategy is crucial for improving the reliability of ISDF relaying M2M sensor networks in N-Nakagami fading.
• Effective power allocation is a key factor in optimizing network performance and minimizing outage probability.
• The derived analytical expressions provide valuable tools for the design and analysis of such wireless networks.