Title :
Chunk-Based Resource Allocation in Distributed MISO-OFDMA Systems with Fairness Guarantee
Author :
Papoutsis, Vasileios D. ; Kotsopoulos, Stavros A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Patras, Rio, Greece
fDate :
4/1/2011 12:00:00 AM
Abstract :
The resource allocation problem for the downlink of Orthogonal Frequency Division Multiple Access (OFDMA) wireless systems is investigated. It is assumed that the Base Station (BS) consists of multiple antennas in a Distributed Antenna System (DAS), whereas a single antenna is available to each user. Also, the allocation unit is not the subcarrier, as in conventional OFDMA systems, but a set of contiguous subcarriers (chunk). The proposed suboptimal but efficient algorithm maximizes the system throughput subject to total available power and proportional data rate constraints among users. Simulation and complexity comparison are provided to show the benefits of chunk-based resource allocation to DASs.
Keywords :
OFDM modulation; antennas; frequency division multiple access; radio links; resource allocation; base station; chunk-based resource allocation; contiguous subcarrier; distributed MISO-OFDMA system; distributed antenna system; downlink; orthogonal frequency division multiple access; wireless system; Antennas; Complexity theory; Correlation; Downlink; Resource management; Throughput; Wireless communication; MISO; OFDMA; chunks; distributed antenna system; resource allocation;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.020111.102273
