Performance Comparisons of CDMA, OFDM, and MC-CDMA with Inaccurate Channel Estimates and Low-SNR Environments 


Vol. 30,  No. 1, pp. 55-61, Jan.  2005


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  Abstract

Mobile communication systems are required not only to support high-data-rate transmissions in favorable channel conditions but also to be able to tolerate hostile environments possibly encountered by cellular communications. This paper compares CDMA(Code Division Multiple Access), OFDM(Orthogonal Frequency Division Multiplexing), and MC-CDMA(Muiti-Camer CDMA)with inaccurate channel estimates and low SNR environments. The equations and simulation results show that the performance losses in CDMA systems due to imprecise channel estimates are not considerable while frequency-hopping of OFDM systems can result in more than 10dB SNR losses Also, this paper show that frequency-spreading of MC-CDMA can be very helpful for channel compensation performances than frequency-hopping or time-spreading of OFDM.

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  Cite this article

[IEEE Style]

M. Rim, "Performance Comparisons of CDMA, OFDM, and MC-CDMA with Inaccurate Channel Estimates and Low-SNR Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 1, pp. 55-61, 2005. DOI: .

[ACM Style]

Minjoong Rim. 2005. Performance Comparisons of CDMA, OFDM, and MC-CDMA with Inaccurate Channel Estimates and Low-SNR Environments. The Journal of Korean Institute of Communications and Information Sciences, 30, 1, (2005), 55-61. DOI: .

[KICS Style]

Minjoong Rim, "Performance Comparisons of CDMA, OFDM, and MC-CDMA with Inaccurate Channel Estimates and Low-SNR Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 1, pp. 55-61, 1. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880