Title :
Layered -space-time architecture for MIMO block spread CDMA systems
Author :
Dharma, Tio Surya ; Madhukumar, A.S. ; Premkumar, A.B.
Author_Institution :
Sch. of Comput. Eng., Nanyang Technol. Univ.
Abstract :
In this paper, single-carrier block spread CDMA for multiple-input-multiple-output (MIMO) systems is proposed. With block spreading and despreading, multiple-user intererence free (MUI-free) transmission with reduced processing complexity is achieved. Layered space-time transmission (LST) is employed to enhance the data rak. of the proposed system. The proposed system is studied extensively under different channel conditions and its performance is compared against conventional single-carrier and multicarrier CDMA systems
Keywords :
MIMO systems; channel estimation; code division multiple access; equalisers; frequency-domain analysis; radiofrequency interference; space-time codes; CDMA system; LST; MIMO block spread; MUI-free transmission; channel condition; code division multiple access; frequency domain equalization; layered space-time architecture; multiple-input-multiple-output system; multiple-user interference; processing complexity; Frequency domain analysis; Interference; MIMO; Multiaccess communication; Multipath channels; OFDM modulation; Peak to average power ratio; Senior members; Transmitters; Transmitting antennas;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.02014.
