Abstract
In this paper we consider multiple-input multiple-output (MIMO) downlink TDMA systems employing space-time Turbo codes (STTuC) over the multipath fading channel. The mixture of inter-cell interference (ICI), inter-antenna interference (IAI) and inter-symbol interference (ISI) can prevent the receiver from achieving a satisfactory detection/estimation performance. Here we develop an iterative receiver structure that can effectively detect the wanted signal by simultaneously suppressing all types of interference and estimating the channels in this complex interference environment. The proposed receiver follows the 'Turbo Principle' and is based on Parallel Interference Cancellation (PIC) and MMSE joint channel estimation (MJCE). In each iteration, the soft output of the space-time Turbo decoder is fed back to improve the performance of the PIC and MJCE. Since symbol-level synchronization between base stations is unachievable, the 'optimal' MIMO training sequences cannot achieve optimal performance. The simulation shows that, in this case, the iterative detection/estimation yields a substantial performance gain over both the iterative detection/one-shot estimation and the RAKE reception/iterative estimation.
| Original language | English |
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| Title of host publication | VTC2004-SPRING: 2004 IEEE 59TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS |
| Place of Publication | NEW YORK |
| Publisher | IEEE |
| Pages | 1693-1697 |
| Number of pages | 5 |
| ISBN (Print) | 0-7803-8255-2 |
| Publication status | Published - 2004 |
| Event | 59th IEEE Vehicular Technology Conference - Milan Duration: 17 May 2004 → 19 May 2004 |
Conference
| Conference | 59th IEEE Vehicular Technology Conference |
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| City | Milan |
| Period | 17/05/04 → 19/05/04 |