Title :
General baseband digital model and matrix representation for different orthogonal frequency division multiplexing CDMA schemes
Author :
Wu, Xiaojun ; Zhao, Zheng ; Yin, Qinye
Author_Institution :
Inst. of Inf. Eng., Xi´´an Jiaotong Univ., China
Abstract :
Multicarrier modulation code division multiple access (MCM-CDMA) technique or orthogonal frequency division multiplexing code division multiple access (OFDM-CDMA) scheme can sufficiently utilize the available spectrum and meet the demand of diverse multimedia services, therefore it is broadly considered as an effective approach for future wireless multimedia communications. In this paper, based on software-defined radio (SDR), by exploiting the discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT), a general baseband digital model for different OFDM-CDMA schemes is developed. Moreover, the corresponding matrix representation is addressed
Keywords :
OFDM modulation; code division multiple access; discrete Fourier transforms; matrix algebra; multimedia communication; multiuser channels; reconfigurable architectures; transceivers; DFT; DSP; IDFT; OFDM-CDMA; code division multiple access; digital signal processor; discrete Fourier transform; general baseband digital model; inverse discrete Fourier transform; matrix representation; multicarrier modulation code division multiple access; multimedia services; multimode transceivers; orthogonal frequency division multiplexing; reconfigurable architecture; software-defined radio; wireless multimedia communications; Baseband; Discrete Fourier transforms; Fading; Frequency conversion; Multiaccess communication; Multicarrier code division multiple access; Multimedia communication; OFDM; Time domain analysis; Wireless communication;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936976
