Shu Feng, Zhao Guangling, Wu Lenan. Research about the ofdm-based digital broadcasting system model and decision about the number of the total subcarriers[J]. Journal of Electronics & Information Technology, 2003, 25(4): 439-446.
Citation:
Shu Feng, Zhao Guangling, Wu Lenan. Research about the ofdm-based digital broadcasting system model and decision about the number of the total subcarriers[J]. Journal of Electronics & Information Technology, 2003, 25(4): 439-446.
Shu Feng, Zhao Guangling, Wu Lenan. Research about the ofdm-based digital broadcasting system model and decision about the number of the total subcarriers[J]. Journal of Electronics & Information Technology, 2003, 25(4): 439-446.
Citation:
Shu Feng, Zhao Guangling, Wu Lenan. Research about the ofdm-based digital broadcasting system model and decision about the number of the total subcarriers[J]. Journal of Electronics & Information Technology, 2003, 25(4): 439-446.
As time-variant multipath channels, the time-variant property of MW and SW channels causes the interchannel interfere (ICI) between different subchannels of OFDM-based digital amplitude modulation broadcasting (DAMB) system. In this paper, the OFDM system model is analyzed in MW and SW channels, and ICI due to time-variant channel is formulated. Finally, by computer simulation, the maximum number of the total subcarrier in OFDM system is estimated under the condition that ICI is much smaller compared to signal. This value is very important for the DAMB system.
DRM proposal for a digital radio system for application in the broadcasting bands below 30MHz,2000.4 ［2］Y.S. Choi, P. J. Voltz, P. A. Cassara, On channel estimation and detection for multicarrier signalsin fast and selective Rayleigh fading channels [J], IEEE Trans. on Communications, 2001, 49(8),1375-1487.[2]J.G. Proakis, Digital Communications, 3rd ed. New York, McGraw-Hill, 1995, 878-965.[3]束锋,OFDM技术及其在数字调幅广播信道中的应用研究[博士论文],第三章,东南大学,2002,26-35.
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