Introduction (chapter objectives) Power spectral density Matched filters Recall former Chapter that random signals are used to convey information. Noise is also described in terms of statistics. Thus, knowledge of random signals and noise is fundamental to an understanding of communication systems
Introduction Basic signal properties(dc, rms, dBm. and power) Fourier transform and spectra Linear systems and linear distortion Bandlimited signal and sampling Discrete Fourier transform · Bandwidth of signal
Space-Time Code Design in OFDM Systems Ben Lu and Xiaodong Wang Department of Electrical Engineering Texas A&M University, College Station, TX 7784 Er-mail:(benlu, wang]@ee. tamu.edu