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1	Probability of Bit Error on a Standard IRIG Telemetry Channel Using the Aeronautical Fading Channel Model Nelson, N. Thomas 10 1900 (has links) International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California / This paper analyzes the probability of bit error for PCM-FM over a standard IRIG channel subject to multipath interference modeled by the aeronautical fading channel. The aeronautical channel model assumes a mobile transmitter and a stationary receiver and specifies the correlation of the fading component. This model describes fading which is typical of that encountered at military test ranges. An expression for the bit error rate on the fading channel with a delay line demodulator is derived and compared with the error rate for the Gaussian channel. The increase in bit error rate over that of the Gaussian channel is determined along with the power penalty caused by the fading. In addition, the effects of several channel parameters on the probability of bit error are determined. Multipath fading Delay line demodulator Probability of bit error Aeronautical Channel
2	Analysis of the effects of phase noise and frequency offset in orthogonal frequency division multiplexing (OFDM) systems Erdogan, Ahmet Yasin 03 1900 (has links) Approved for public release, distribution is unlimited / Orthogonal frequency division multiplexing (OFDM) is being successfully used in numerous applications. It was chosen for IEEE 802.11a wireless local area network (WLAN) standard, and it is being considered for the fourthgeneration mobile communication systems. Along with its many attractive features, OFDM has some principal drawbacks. Sensitivity to frequency errors is the most dominant of these drawbacks. In this thesis, the frequency offset and phase noise effects on OFDM based communication systems are investigated under a variety of channel conditions covering both indoor and outdoor environments. The simulation performance results of the OFDM system for these channels are presented. / Lieutenant Junior Grade, Turkish Navy Multiplexing Brownian motion processes Electrical engineering Frequency offset Phase noise Differential decoding IFFT (Inverse fast Fourier transform) Guard interval FFT MATLAB Additive white Gaussian noise (AWGN) Interleaver Deinterleaver Mobile channels Convolutional encoding Viterbi decoder Probability of bit error Weiner process

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Probability of Bit Error on a Standard IRIG Telemetry Channel Using the Aeronautical Fading Channel Model

Analysis of the effects of phase noise and frequency offset in orthogonal frequency division multiplexing (OFDM) systems