Abstract
The capacity of a Multiple Input Multiple Output (MIMO) broadcast system with Orthogonal Space Division Multiple Access (OSDMA) is studied under the assumptions of noisy and/or delayed Channel State Information (CSI) available at the transmitter. The impact of channel estimation errors and outdated CSI is evaluated both analytically and through Monte Carlo simulations for varying system parameters (i.e., channel decorrelation, number of users, number of antennas). It is found that channel variability is the predominant cause of performance degradation in a realistic setting, where feedback of CSI from the receivers to the transmitter takes a finite amount of time, thus suggesting to limit the use of OSDMA to channels varying slowly enough.
| Original language | English (US) |
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| Pages | 546-550 |
| Number of pages | 5 |
| State | Published - 2004 |
| Externally published | Yes |
| Event | 2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Lisbon, Portugal Duration: Jul 11 2004 → Jul 14 2004 |
Other
| Other | 2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC |
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| Country/Territory | Portugal |
| City | Lisbon |
| Period | 7/11/04 → 7/14/04 |
All Science Journal Classification (ASJC) codes
- Signal Processing
- General Engineering