Title :
Transmission and reception of TDD multicarrier CDMA signals in mobile communications system
Author :
Pu, Zhiyong ; You, Xiaohu ; Cheng, Shixin ; Wang, Haifeng
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
Multicarrier CDMA (MC-CDMA) signal coming from each user suffers from the Multiaccess interference (MAI) caused by the loss of orthogonality among different user´s spreading codes. In order to restore the orthogonality, this paper presents a precoding (pre-equalization) technique to equalize each subchannel. Through the precoding transmission, the receiver can achieve multiaccess interference (MAI) free reception and will not amplify the power of the noise
Keywords :
code division multiple access; decision feedback equalisers; encoding; fading channels; intersymbol interference; land mobile radio; multipath channels; multiuser channels; spread spectrum communication; DFE; ISI; MC-CDMA; TDD multicarrier CDMA signals; decision feedback equalizer; intersymbol interference; mobile communications system; multiaccess interference; multicarrier signal reception; multicarrier signal transmission; pre-equalization; precoding technique; precoding transmission; receiver; spreading codes; subchannel; Detectors; Fading; Maximum likelihood detection; Maximum likelihood estimation; Mobile communication; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Power system restoration; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778428
