A Combined User-order and Chunk-order Algorithm to Minimize the Average BER for Chunk Allocation in SCFDMA Systems
Abstract: A Chunk by
chunk-based allocation is an emerging subcarrier allocation in Single Carrier Frequency
Division Multiple Access (SC-FDMA) due to its low complexity. In this paper, a
combined userorder and chunk-order allocation for solving chunk allocation
problem which minimizes the average BER of all users while improving the
throughput in SC-FDMA uplink is proposed. The subcarrier grouping into a chunk
of all users on both-order allocations are performed by averaging the BER of a
contiguous subcarriers within a chunk. The sequence of allocation is according
to the average of users’ BER on userorder allocation and the average of chunks’
BER on chunk-order allocation. The best allocation is determined by choosing
one of both-order allocations which provides the smaller BER systems. The simulation
results showed that the proposed algorithm can outperform the previous
algorithms in term of average BER and throughput without increase the time
complexity.
Author: Arfianto Fahmi
Journal Code: jptkomputergg160306
