TY - GEN
T1 - Adaptive MCS selection in ofdm systems based on channel frequency coherence
AU - Al-Janabi, Muayad S.
AU - Tsimenidis, Charalampos C.
AU - Sharif, Bayan S.
AU - Goff, Stéphane Y.Le
PY - 2009
Y1 - 2009
N2 - This paper presents a joint adaptive modulation and coding (AMC) scheme, which exploits the coherence bandwidth of the wireless channel to divide the transmitted frame into independent sub-channels that correspond to the channel coherence bandwidth. This strategy is implemented for orthogonal frequency division multiplexing (OFDM) systems with channel state information (CSI) feedback. Low density parity check (LDPC) codes are utilized for encoding by employing signalto noise ratio (SNR) dependent coding rates, as well as distinct modulation schemes to achieve adaptivity to time-varying channel conditions. The performance of the proposed system was tested on Rayleigh fading channels that exhibit frequency coherent bands. Numerical results obtained via simulation demonstrate that the throughput of the proposed system and bit error rate (BER) performance are better than previously suggested approaches.
AB - This paper presents a joint adaptive modulation and coding (AMC) scheme, which exploits the coherence bandwidth of the wireless channel to divide the transmitted frame into independent sub-channels that correspond to the channel coherence bandwidth. This strategy is implemented for orthogonal frequency division multiplexing (OFDM) systems with channel state information (CSI) feedback. Low density parity check (LDPC) codes are utilized for encoding by employing signalto noise ratio (SNR) dependent coding rates, as well as distinct modulation schemes to achieve adaptivity to time-varying channel conditions. The performance of the proposed system was tested on Rayleigh fading channels that exhibit frequency coherent bands. Numerical results obtained via simulation demonstrate that the throughput of the proposed system and bit error rate (BER) performance are better than previously suggested approaches.
UR - http://www.scopus.com/inward/record.url?scp=70349740765&partnerID=8YFLogxK
U2 - 10.1109/AICT.2009.37
DO - 10.1109/AICT.2009.37
M3 - Conference contribution
AN - SCOPUS:70349740765
SN - 9780769536118
T3 - Proceedings of the 2009 5th Advanced International Conference on Telecommunications, AICT 2009
SP - 177
EP - 182
BT - Proceedings of the 2009 5th Advanced International Conference on Telecommunications, AICT 2009
T2 - 2009 5th Advanced International Conference on Telecommunications, AICT 2009
Y2 - 24 May 2009 through 28 May 2009
ER -