Title :
Chunk-Based Resource Allocation in Multicast OFDMA Systems with Average BER Constraint
Author :
Papoutsis, Vasileios D. ; Kotsopoulos, Stavros A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Patras, Rio, Greece
fDate :
5/1/2011 12:00:00 AM
Abstract :
The resource allocation problem for the downlink of Orthogonal Frequency Division Multiple Access (OFDMA) wireless multicast systems is investigated. It is assumed that both the Base Station (BS) and each user are equipped with a single antenna and the allocation unit is not the subcarrier, as in conventional OFDMA systems, but a set of contiguous subcarriers (chunk). The aim of the proposed efficient algorithm is to maximize the total throughput subject to constraints on total available power and average Bit Error Rate (BER) over a chunk. Simulation and complexity analysis are provided to support the benefits of chunk-based resource allocation to multicast OFDMA systems.
Keywords :
OFDM modulation; antennas; communication complexity; error statistics; frequency division multiple access; multicast communication; resource allocation; allocation unit; average BER constraint; average bit error rate; base station; chunk-based resource allocation; complexity analysis; contiguous subcarriers; conventional OFDMA systems; multicast OFDMA systems; orthogonal frequency division multiple access wireless multicast systems; resource allocation problem; single antenna; Complexity theory; Downlink; Modulation; OFDM; Resource management; Throughput; Wireless communication; OFDMA; chunks; multicast systems; multiuser diversity; resource allocation;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.030911.110252
