Use this resource - and many more! - in your textbook!
AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.
SPARC: Superposition-Aided Rateless Coding in Wireless Relay Systems
By: Xijun Wang; Zhigang Cao; Wei Chen;
2011 / IEEE
This item was taken from the IEEE Periodical ' SPARC: Superposition-Aided Rateless Coding in Wireless Relay Systems ' Energy accumulation and information accumulation are two approaches to exploit multiple transmissions in wireless relay systems. There is a tradeoff between energy accumulation and information accumulation from an outage perspective, in which a packet is successfully received if the channel capacity exceeds the transmission rate. However, how to strike a balance between these two approaches is still unknown. In this paper, we propose a new rateless-coding-based transmission scheme in wireless relay systems, where the relay superposes two rateless-coded packets generated from different codebooks to strike a balance between energy accumulation and information accumulation. We analyze the average end-to-end throughput of the proposed scheme and formulate an optimization problem to find the optimal power allocation ratio. Simulation results will validate our analysis and show that, compared with pure energy accumulation and pure information accumulation, our proposed scheme can achieve substantial throughput gain.
Optimal Power Allocation Ratio
Superposition-aided Rateless Coding
Wireless Relay System
Signal To Noise Ratio