A new code selection scheme is proposed to reduce the MAI of an approximately MAI-free OFDM transceiver that is known as the repetitively coded multi-carrier CDMA (RCMC-CDMA) in this work. That is, if we use M/2 symmetric codewords or anti-symmetric codewords of the M Hadamard-Walsh codes, the MAI of the system can be greatly reduced. With this code selection scheme, the requirement of a sufficiently large number of subchannels to achieve the MAI-free property can be relaxed so that the approximately MAI-free property still holds when the number of subchannels is relatively small.
|頁（從 - 到）||4335-4339|
|期刊||IEEE Vehicular Technology Conference|
|出版狀態||Published - 1 十二月 2004|
|事件||2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States|
持續時間: 26 九月 2004 → 29 九月 2004