Coding and Resource Scheduling in Packet Oriented Adaptive TDMA/OFDMA Systems
Paper in proceeding, 2006
Within the EU FP6 Integrated Project WINNER, adaptive transmission is investigated as a key technology for boosting the spectral efficiency of a new radio interface for 4G systems. Adaptive allocation and link adaptation of time-frequency chunks based on channel prediction in an OFDM-based system offers a significant potential to design a spectrally efficient system. The chunk size is typically defined based on the minimum coherence time and coherence bandwidth of the targeted channels. it is important to allow efficient channel coding and link retransmission schemes without restricting the resource scheduler, even for systems using small chunk sizes, to achieve multi-user diversity gains. In this paper we introduce some possible approaches to implement FEC coding and Hybrid ARQ and analyze their interplay with resource scheduling in packet oriented adaptive TDMA/OFDMA.
forward error correction coding (FEC)
adaptive transmission
Resource scheduling
spectral efficiency
Multiple access
OFDM
4G mobile wireless systems
Forward error correction
link retransmissions
multiple access
Orthogonal Frequency Division Multiplexing (OFDM)
Author
Tommy Svensson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Sorour Falahati
Chalmers, Signals and Systems
Mikael Sternad
Proceedings IEEE Vehicular Technology Conference Spring, Melbourne, Australia
Areas of Advance
Information and Communication Technology
Subject Categories
Telecommunications
DOI
10.1109/VETECS.2006.1683116