Title :
Resource Allocation for Multicast Services with Joint FGS Video Coding and UEP RS Coding Scheme in Single Frequency Networks
Author :
Chen, Lei ; Wang, Xiaoxiang
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
This paper propose an optimal resource allocation algorithm by exploiting layered coding combined with erasure correction coding for multicast services in the downlink of OFDMA-based single frequency networks (SFN). In this algorithm, we exploit unequal error protection (UEP) Reed-Solomon (RS) coding to compensate for possible data packet loss of base layer and enhancement layers which are obtained from fine-granularity-scalability (FGS) video coding. In order to reduce the feedback load, BSs only utilize the average channel state information (CSI) of the users. The proposed algorithm maximizes the enhancement layers throughput while guaranteeing the minimum data rate of the base layer in each multicast group. A two-phase suboptimal algorithm is proposed to reduce the computational complexity. Simulation results show that the performance of the algorithm with UEP RS coding is much better than the algorithm without. Moreover, the proposed algorithms significantly outperform conventional multicast scheme (CMS).
Keywords :
Reed-Solomon codes; computational complexity; error correction codes; multicast communication; multimedia communication; resource allocation; video coding; CMS; CSI; Reed-Solomon coding; SFN; UEP RS coding scheme; average channel state information; base layer; computational complexity; data packet loss compensation; enhancement layers; erasure correction coding; feedback load; fine-granularity-scalability video coding; joint FGS video coding; layered coding; multicast service scheme; multimedia broadcast service; optimal resource allocation algorithm; single frequency networks; two-phase suboptimal algorithm; unequal error protection coding; Encoding; OFDM; Quality of service; Resource management; Throughput; Video coding; Wireless communication;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6398947