Introduction
When the communication channel induces intersymbol interference (ISI) to the transmitted digital signal, detection of the transmitted symbols becomes more complicated than in the traditional Additive White Gaussian Noise (AWGN) channel case; more sophisticated receiver architectures are needed. Examples of bandlimited systems include GSM, UMTS, and xDSL. All of these systems employ some form of synchronization, channel estimation and equalizer functions to maintain sufficiently low error rates.
In this laboratory work we study how to detect symbols transmitted over
a bandlimited communications channel. A digitally modulated signal is transmitted
through a radio channel simulator, sampled using A/D conversion cards,
and transferred to MATLAB for further processing. The "receiver" is then
implemented in MATLAB and transmitted symbols are detected.
Material
Material for the lab work in pdf, 791 kb.
Hints for
the lab, in pdf.
Auxiliary
m-files.
Prerequisites
Literature
Some links
Updated 16-09-2002/Lju