Performance A Analysis of OFDM/QPSK-DMR System Using BL-PSF over Microwave Channel Environments 


Vol. 29,  No. 9, pp. 1279-1288, Sep.  2004


PDF
  Abstract

In this paper, the DMR(Digital Microwave Radio) system-based OFDM(Orthogonal Frequency Division Multiplexing) scheme in microwave channel environments has been proposed and system performances have been evaluated. The existing single carrier DMR system has a complex system structure due to using high-level QAM(Quadrature Amplitude Modulation) modulation scheme and so charmel capacity is limited by sensitive effects from fading. Therefore, in the proposed DMR system, it uses that the OFDM scheme for enhancement of fading distortion and also uses that the band-limited pulse shaping filter instead of windowing for no additional data such as GI/GB and for using efficient of IFFT/FFT block. The performance of OFDM/QPSK-DMR system and single carrier DMR system are analysed by computer simulation using two-ray model under the microwave channel environments The computer simulation results confirm that the fade margin of the proposed OFDM/QPSK-DMR system is highly increased as the number of sub-carriers is larger.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

J. Ahn, H. Yang, C. Oh, S. Cho, "Performance A Analysis of OFDM/QPSK-DMR System Using BL-PSF over Microwave Channel Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 9, pp. 1279-1288, 2004. DOI: .

[ACM Style]

Jun-bae Ahn, Hee-jin Yang, Chang-heon Oh, and Sung-joon Cho. 2004. Performance A Analysis of OFDM/QPSK-DMR System Using BL-PSF over Microwave Channel Environments. The Journal of Korean Institute of Communications and Information Sciences, 29, 9, (2004), 1279-1288. DOI: .

[KICS Style]

Jun-bae Ahn, Hee-jin Yang, Chang-heon Oh, Sung-joon Cho, "Performance A Analysis of OFDM/QPSK-DMR System Using BL-PSF over Microwave Channel Environments," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 9, pp. 1279-1288, 9. 2004.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)






pISSN : 1226 - 4717
eISSN : 2287 - 3880