Multiple trellis coded modulation using BFSK/MPSK modulation
Abstract
Multiple trellis-coded modulation (MTCM) is used in conjunction with a frequency/phase modulation scheme. While conventional 2-D trellis coders output one channel symbol per trellis branch, multiple trellis coders output more than one channel symbol per trellis branch. It is shown that the combination of multiple trellis coding and 4-D BFSK/MPSK modulation can yield substantial coding gains over the 2-D multiple trellis coded modulation technique, while incurring a slight increase in transmitter bandwidth. Furthermore, 4-D MTCM schemes which possess noninteger throughput have been designed. It is shown that these combined modulation/coding schemes offer a favorable tradeoff between coding gain and spectral efficiency.
- Publication:
-
GLOBECOM 1990 - IEEE Global Telecommunications Conference and Exhibition, Volume 1
- Pub Date:
- 1990
- Bibcode:
- 1990gtc.....1..365D
- Keywords:
-
- Frequency Modulation;
- Frequency Shift Keying;
- Phase Modulation;
- Phase Shift Keying;
- Trellis Coding;
- Performance Tests;
- Pulse Communication;
- Transformations (Mathematics);
- Communications and Radar