TY - GEN
T1 - Impact of spreading factor on turbo-coded multi-code MC-CDMA using ICI cancellation
AU - Yui, Tatsunori
AU - Tomeba, Hiromichi
AU - Adachi, Fumiyuki
PY - 2008
Y1 - 2008
N2 - Multi-carrier code division multiple access (MCCDMA) is one of promising broadband wireless access techniques. Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can take advantage of the channel frequency-selectivity and improve the average bit error rate (BER) performance of single-code MC-CDMA due to frequency-diversity gain. However, as the code multiplexing order is increased so as to increase the data rate without bandwidth expansion, the presence of residual inter-code interference (ICI) degrades the transmission performance. Recently, we proposed a frequency-domain adaptive interference cancellation (FDAIQ technique to mitigate the residual ICI and showed that the full code multiplexed MC-CDMA with FDAIC achieves better performance than orthogonal frequency division multiplexing (OFDM). However, the impact of spreading factor was not discussed. In this paper, we evaluate, by computer simulation, the average BER and throughput performances of turbo-coded MC-CDMA with FDAIC for different values of spreading factor, and show that the full-code multiplexed MC-CDMA with FDAIC using the full spreading factor (equal to the number of subcarriers) can provide almost the same or better transmission performance than OFDM. copyright
AB - Multi-carrier code division multiple access (MCCDMA) is one of promising broadband wireless access techniques. Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can take advantage of the channel frequency-selectivity and improve the average bit error rate (BER) performance of single-code MC-CDMA due to frequency-diversity gain. However, as the code multiplexing order is increased so as to increase the data rate without bandwidth expansion, the presence of residual inter-code interference (ICI) degrades the transmission performance. Recently, we proposed a frequency-domain adaptive interference cancellation (FDAIQ technique to mitigate the residual ICI and showed that the full code multiplexed MC-CDMA with FDAIC achieves better performance than orthogonal frequency division multiplexing (OFDM). However, the impact of spreading factor was not discussed. In this paper, we evaluate, by computer simulation, the average BER and throughput performances of turbo-coded MC-CDMA with FDAIC for different values of spreading factor, and show that the full-code multiplexed MC-CDMA with FDAIC using the full spreading factor (equal to the number of subcarriers) can provide almost the same or better transmission performance than OFDM. copyright
KW - Code-multiplexing
KW - Interference cancellation
KW - MC-CDMA
KW - Turbo-coding
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M3 - Conference contribution
AN - SCOPUS:66149102719
SN - 4885522323
SN - 9784885522321
T3 - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
BT - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
T2 - 2008 14th Asia-Pacific Conference on Communications, APCC 2008
Y2 - 14 October 2008 through 16 October 2008
ER -