Performance Analysis of UMM-S/OFDM with Multi-level Modulation in the Rayleigh Fading Channel 


Vol. 32,  No. 1, pp. 51-56, Jan.  2007


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  Abstract

Unitary matrix modulation (UMM) is investigated in multiple antennas system that is called unitary space-time modulation (USTM). When we consider only diagonal components of UMM with splitting over the coherence bandwidth, the system can obtain frequency diversity in a single antenna system. In Rayleigh fading channel, we compared USTM/OFDM with 2Tx-antenna with UMM-S/OFDM with 1Tx-antenna, conventional multi-level OFDM and UMM-S/OFDM with changing bit rate per ㎐. Also, we analyzed SNR for between multi-level modulation STBC/OFDM andmulti-level modulation UMM-S/OFDM with changing transmission rate. When it wasadaptive multi-level modulation to improve SNR, we did the UMM-S/OFDM system performance analysis of N-ary PSK and M-ary QAM.

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  Cite this article

[IEEE Style]

N. S. Kim and S. H. Cho, "Performance Analysis of UMM-S/OFDM with Multi-level Modulation in the Rayleigh Fading Channel," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 1, pp. 51-56, 2007. DOI: .

[ACM Style]

Nam Soo Kim and Sung Ho Cho. 2007. Performance Analysis of UMM-S/OFDM with Multi-level Modulation in the Rayleigh Fading Channel. The Journal of Korean Institute of Communications and Information Sciences, 32, 1, (2007), 51-56. DOI: .

[KICS Style]

Nam Soo Kim and Sung Ho Cho, "Performance Analysis of UMM-S/OFDM with Multi-level Modulation in the Rayleigh Fading Channel," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 1, pp. 51-56, 1. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880