Multilevel turbo coded-continuous phase frequency shift keying (MLTC-CPFSK)
Computers and Electrical Engineering
Scrambling-based shaping for turbo coded modulation
IEEE Transactions on Communications
A novel weighted multilevel space-time trellis coding scheme
Computers & Mathematics with Applications
Multilevel coding modulation system with binary block codes
Computer Communications
Full length article: Performance analysis of superposition coded modulation
Physical Communication
Adaptively Grouped Multilevel Space-Time Trellis Codes
Wireless Personal Communications: An International Journal
| Hi-index | 754.84 |
A new multilevel coding method that uses several error-correcting codes is proposed. The transmission symbols are constructed by combining symbols of codewords of these codes. Usually, these codes are binary error-correcting codes and have different error-correcting capabilities. For various channels, efficient systems can be obtained by choosing these codes appropriately. Encoding and decoding procedures for this method are relatively simple compared with those of other multilevel coding methods. In addition, this method makes effective use of soft-decisions to improve the performance of decoding. The decoding error probability is analyzed for multiphase modulation, and numerical comparisons to other multilevel coding systems are made. When equally complex systems are compared, the new system is superior to other multilevel coding systems.