Abstract
In this paper we consider a multiple-input multiple-output (MIMO) downlink multi-cell CDMA system employing BLAST space-time Turbo codes (STTuC) over the frequency-selective fading channel. The system performance is measured in terms of system spectral efficiency (bits/s/Hz/cell). A space-time RAKE receiver and a space-time Turbo receiver are proposed. The Turbo receiver is based on space-time Parallel Interference Cancellation (ST-PIC), which can reconstruct and subtract all the types of inferference in the multipath MIMO CDMA channel at the same time. In each iteration,the soft output of the spacetime Turbo decoder is fed back to improve the PIC'S performance. The simulation shows that the Turbo PIC receiver enhances the STTuC CDMA system spectral efficiency by 50% over, the RAKE receiver. This result suggests that, with the Turbo reception technique, the MIMO CDMA system can serve much more users in a cell or provide much higher rate downlink packed data service to one user.
| Original language | English |
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| Title of host publication | PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003 |
| Editors | K Gong, ZH Niu |
| Place of Publication | BEIJING |
| Publisher | PUBLISHING HOUSE ELECTRONICS INDUSTRY |
| Pages | 1390-1394 |
| Number of pages | 5 |
| ISBN (Print) | 7-5053-5066-8 |
| Publication status | Published - 2003 |
| Event | 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications - BEIJING Duration: 7 Sept 2003 → 10 Sept 2003 |
Conference
| Conference | 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications |
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| City | BEIJING |
| Period | 7/09/03 → 10/09/03 |