Abstract
We propose a variable-power and variable-rate coded MQAM modulation technique for high-speed data transmission on fading channels. Coding gain is obtained by superimposing trellis-codes designed for AWGN channels on the adaptive modulation, and we obtain the same coding gains as these codes exhibit in AWGN. We present analytical and simulation results which show a 3 dB coding gain relative to uncoded adaptive modulation for a simple 4-state trellis code, and a 4 dB coding gain for an 8-state trellis code. More complex trellis codes achieve higher gains.
| Original language | English (US) |
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| Pages | 1488-1492 |
| Number of pages | 5 |
| State | Published - 1997 |
| Externally published | Yes |
| Event | Proceedings of the 1997 IEEE International Conference on Communications, ICC. Part 3 (of 3) - Montreal, Can Duration: Jun 8 1997 → Jun 12 1997 |
Conference
| Conference | Proceedings of the 1997 IEEE International Conference on Communications, ICC. Part 3 (of 3) |
|---|---|
| City | Montreal, Can |
| Period | 6/8/97 → 6/12/97 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering