| Paper: | SPCOM-P5.3 | ||
| Session: | MIMO Capacity Maximization/Space-Time Coding | ||
| Time: | Wednesday, May 19, 13:00 - 15:00 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Capacity and Performance Analysis, Optimization, and Bounds | ||
| Title: | SPECTRUM EFFICIENCY OF MIMO MULTIPLE-ACCESS WIRELESS SYSTEMS EXPLORING ONLY CHANNEL SPATIAL CORRELATIONS: AN ASYMPTOTIC APPROACH | ||
| Authors: | Yao-Nan Lee; National Tsing Hua University | ||
| Chao-Kai Wen; National Tsing Hua University | |||
| Jiunn-Tsair Chen; National Tsing Hua University | |||
| Constantinos Papadias; Bell Labs, Lucent Technologies | |||
| Hsing-Hung Chen; National Tsing Hua University | |||
| Abstract: | We investigate the asymptotic spectrumefficiency, by exploring only the spatial correlations at both the transmitters and the receiver, of a Gaussian antenna-array-based multiple-input multiple-output (MIMO) multiple-access wireless systems. Surprisingly, the asymptotic result is not only rigorously valid for systems with large array sizes, but also produces highly accurate ergodic results, even for systems with only a few antenna elements at each transmitter and receiver. This offers the asymptotic solution important practical values in analyzing and designing a MIMO multiple access system that makes best use of the wireless channel structure. Furthermore, with the asymptotic solution, we provide an efficient iterative water-filling algorithm to determine the optimal transmit signal covariance matrices when only the slow-varying channel spatial covariance information is available. | ||
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