S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Others_전기·정보공학부
MSE-based transmit power control for transmission of QAM signals in frequency selective fading channel
- Issue Date
- VTC Spring 2002. IEEE 55th Vehicular Technology Conference, vol. 2, pp. 885-888, 2002.
- mean square error methods ; power control ; time-varying cahnnels ; QAM signal transmission
- When a multi-level quadrature amplitude modulation (QAM) signal is transmitted over the wireless channel, transmit power needs to be controlled to avoid severe performance degradation due to the fading. Most studies on the transmit power control (TPC) were considered in the flat fading channel. In this paper, we propose a power control scheme in the frequency selective fading channel, where the transmit power is controlled based on the mean-squared error (MSE) of the equalizer output. The performance of the proposed scheme is analytically evaluated and verified by computer simulation in the fixed wireless channel with low Doppler frequency.
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