Name
Abstract | ||
|---|---|---|
This paper proposes a precoding scheme for downlink multiuser MIMO-OFDM systems. The proposed precaling employs the minimum average bit error rate (MABER) criterion, and obtains precoding matrices by the steepest descent algorithm in order to minimize average BER of mobile stations. As the cost function of the proposed scheme, an upper bound of the average BER is derived from the pairwise error probability (PEP) and is averaged with respect to channel state information (CSI) errors. Thus, the MABER scheme is robust against imperfect CSI. Computer simulations under a frequency-selective fading condition demonstrate that the proposed precoder is more robust against the CSI errors than both the zero-forcing (ZF) precoder and a robust sum mean square error (SMSE) precder, and that it is superior in BER to the conventional schemes. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1587/transcom.E94.B.3515 | IEICE TRANSACTIONS ON COMMUNICATIONS |
Keywords | Field | DocType |
multiuser MIMO, MIMO-OFDM, precoding, imperfect channel state information, steepest descent algorithm | MIMO-OFDM,Imperfect,Imperfect channel state information,Computer science,Steepest descent algorithm,Computer network,Electronic engineering,Zero-forcing precoding,Precoding,Telecommunications link | Journal |
Volume | Issue | ISSN |
E94B | 12 | 0916-8516 |
Citations | PageRank | References |
1 | 0.35 | 7 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Linchen Chang | 1 | 1 | 0.35 |
| Kazuhiko Fukawa | 2 | 212 | 39.25 |
| Hiroshi Suzuki | 3 | 162 | 26.01 |
| Satoshi Suyama | 4 | 192 | 31.05 |