TY - GEN
T1 - Frequency domain turbo equalization for multicode DS-CDMA in frequency selective fading channel
AU - Lee, Jun Kyoung
AU - Lee, Taek Joo
AU - Chae, Hyuk Jin
AU - Kim, Dong Ku
PY - 2007
Y1 - 2007
N2 - The higher data rate of mobile communications has been required for various multimedia services. In DS-CDMA system, one of the solutions to increase the throughput is to use multicode. However, multipath channel destroys the orthogonality of spreading codes, which causes the intercode interference (ICI). ICI gives severe effect on multicode DS-CDMA for BER performance. Conventionally, multicode DS-CDMA system uses the Rake receiver with turbo code, which cannot overcome error floor caused by ICI. In this paper, we propose frequency domain turbo equalization based on minimum mean squared error (FDTE-MMSE) for multicode DS-CDMA in frequency selective channel and evaluate its BER performance by computer simulation. The simulation results show that FDTEMMSE gives much better performance than the Rake receiver with turbo code in multipath length L > 1.
AB - The higher data rate of mobile communications has been required for various multimedia services. In DS-CDMA system, one of the solutions to increase the throughput is to use multicode. However, multipath channel destroys the orthogonality of spreading codes, which causes the intercode interference (ICI). ICI gives severe effect on multicode DS-CDMA for BER performance. Conventionally, multicode DS-CDMA system uses the Rake receiver with turbo code, which cannot overcome error floor caused by ICI. In this paper, we propose frequency domain turbo equalization based on minimum mean squared error (FDTE-MMSE) for multicode DS-CDMA in frequency selective channel and evaluate its BER performance by computer simulation. The simulation results show that FDTEMMSE gives much better performance than the Rake receiver with turbo code in multipath length L > 1.
UR - http://www.scopus.com/inward/record.url?scp=44349130224&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44349130224&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2007.4394823
DO - 10.1109/PIMRC.2007.4394823
M3 - Conference contribution
AN - SCOPUS:44349130224
SN - 1424411440
SN - 9781424411443
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
BT - 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
T2 - 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
Y2 - 3 September 2007 through 7 September 2007
ER -