Abstract
Channel state information (CSI) at the transmitter can be used to adapt transmission rate or antenna gains in multi-antenna systems. However, the CSI that is fed back will get outdated if the channel is changing rapidly. We propose a rate-adaptive M-QAM technique equipped with space-time block coding with signal to noise ratio (SNR) feedback as opposed to full channel feedback. We obtain closed-form expressions for the average BER and average throughput for our scheme. We illustrate the performance gains achievable through the rate adaptation and possibly delayed SNR feedback. Our numerical results illustrate the immunity of our proposed technique to error caused by time-delayed feedback.
| Original language | English (US) |
|---|---|
| Title of host publication | Conference Record of the Asilomar Conference on Signals, Systems and Computers |
| Editors | M.B. Matthews |
| Pages | 1032-1036 |
| Number of pages | 5 |
| Volume | 1 |
| State | Published - 2003 |
| Event | Conference Record of the Thirty-Seventh Asilomar Conference on Signals, Systems and Computers - Pacific Grove, CA, United States Duration: Nov 9 2003 → Nov 12 2003 |
Other
| Other | Conference Record of the Thirty-Seventh Asilomar Conference on Signals, Systems and Computers |
|---|---|
| Country/Territory | United States |
| City | Pacific Grove, CA |
| Period | 11/9/03 → 11/12/03 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Signal Processing
- Hardware and Architecture