Title :
Performance of trellis coded star 16-QAM with diversity in Rayleigh fading channel
Author :
Kim, Je-Chan ; Cho, Kee-Sung ; Lee, Yoon-ju
Author_Institution :
Mobile Switching Sect., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
QAM (quadrature amplitude modulation) is a very effective technique to achieve a high bit rate transmission without increasing the bandwidth. However, a high precision for fading compensation is required because information resides in both the amplitude and phase components of the QAM modulated signal. In this paper, trellis coded star 16-QAM with diversity and fading compensation in a Rayleigh fading channel is evaluated. The simulation result shows that the trellis coding and diversity largely improve the BER performance of the system. The proposed system has an improvement of about 23.5 dB over 16-QAM only fading compensation. A diversity gain of 18.5 dB and trellis coding gain of 5 dB at BER=10-4 can be obtained
Keywords :
Rayleigh channels; compensation; digital radio; diversity reception; error statistics; fading; land mobile radio; quadrature amplitude modulation; trellis coded modulation; 18.5 dB; 23.5 dB; 5 dB; BER performance; QAM modulated signal; Rayleigh fading channel; amplitude component; diversity; fading compensation; gain; high bit rate transmission; phase component; quadrature amplitude modulation; trellis coded star 16-QAM; trellis coding; Amplitude modulation; Bandwidth; Bit error rate; Bit rate; Diversity methods; Fading; Gain; Phase modulation; Quadrature amplitude modulation; Rayleigh channels;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.647073
