Title :
Multiuser detection scheme for TDMA mobile systems using spatial diversity and MMSE decision-feedback receiver
Author :
Hwang, Jeng-Kuang
Author_Institution :
Dept. of Electr. Eng., Yuan-Ze Inst. of Technol., Chungli, Taiwan
Abstract :
We present a multiuser detection scheme to increase the capacity of generic TDMA mobile systems. This scheme allows two users to occupy the same time slot for up-link transmission. At the base station, we employ spatial diversity reception and a T/2-spaced filterbank structure to implement an MIMO DFE receiver which is optimized under the minimum mean square error (MMSE) criterion. Through computer simulation, it is shown that as the number of antennas increases, the performance for both users can be improved significantly. Other issues like training sequence design and power control are also addressed
Keywords :
MIMO systems; array signal processing; channel bank filters; cochannel interference; decision feedback equalisers; diversity reception; filtering theory; interference suppression; intersymbol interference; land mobile radio; least mean squares methods; multiuser channels; power control; radio receivers; signal detection; telecommunication control; time division multiple access; CCI; ISI; MIMO DFE receiver; MMSE criterion; MMSE decision-feedback receiver; T/2-spaced filterbank structure; TDMA mobile systems; antenna array; base station; computer simulation; interference cancellation; minimum mean square error; multiuser detection; performance; power control; spatial diversity; spatial diversity reception; system capacity; training sequence design; up-link transmission; Base stations; Baseband; Diversity reception; MIMO; Multiaccess communication; Multiuser detection; Power control; Receiving antennas; Signal processing; Time division multiple access;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818654
