Title :
Application of the new joint complex Hadamard-inverse Fourier transform in a OFDM/CDMA wireless communication system
Author_Institution :
Inst. of Electron. & Telecommun., Poznan Univ. of Technol., Poland
Abstract :
In the paper, application of a multicarrier CDMA (OFDM/CDMA) technique in mobile radio communication systems is considered. Multi-user combining realized by the means of the fast Hadamard transform (FHT) and multicarrier modulation using the inverse fast Fourier transform (IFFT) are elaborated. The possibility of joining FHT and IFFT is shown. The fast algorithm for this new joint transform (named “CH-IF”) is presented. Applications of the inverse of the proposed CH-IF transform in a base and in a mobile station receiver are considered
Keywords :
Hadamard transforms; OFDM modulation; code division multiple access; fast Fourier transforms; mobile radio; multiuser channels; radio receivers; CH-IF transform; FHT; IFFT; OFDM/CDMA; base station receiver; fast Hadamard transform; inverse fast Fourier transform; joint transform; mobile radio; mobile station receiver; multi-user combining; multicarrier CDMA; multicarrier modulation; Base stations; Fast Fourier transforms; Fourier transforms; Land mobile radio; Multiaccess communication; Multiple access interference; OFDM modulation; Radio transmitters; Receivers; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800323
