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Two-Way Relaying Cooperative Wireless Networks : Resource Allocation and Performance Analysis

Abrar M., Gui X., Punchihewa A.

International Journal of Electronics and Telecommunications

2013

Vol. 59, No. 3

229-235

Relay-based cooperative wireless networks have been widely considered one of the cost-effective solutions to meet the demands in future wireless networks. In order to maximize the overall sum-rate while maintaining proportional fairness among users, we investigate different resource allocation algorithms in two-way relay networks with analog network coding (ANC) protocol and time division broadcast (TDBC) protocol. The algorithms investigated are different from traditional proportional fairness schemes in terms of fairness and computational complexity as we have applied Access Proportional Fairness (APF) and Minimum Rate Proportional Fairness (MRPF) along with load balancing at the relays. A MATLAB simulation has been performed and simulation results show the effectiveness of these algorithms.

Benchmarking image codecs by assessment of coded test images: the development of test images and new objective quality metrics

Punchihewa A., Bailey D. G., Hodgson R. M.

Journal of Telecommunications and Information Technology

2006

nr 1

11-16

Objective quality measures are required for benchmarking codec performance. Our aim was to develop a simple, accurate method capable of rapidly measuring the degree of blockiness, edge-blur and ringing due to image compression. Two test images were designed to emphasise these artefacts. The efficacy of the new metrics is demonstrated using a JPEG codec at a range of compression levels.