Title :
The computer simulation of a high speed data transmission system for use over high frequency radio links
Author_Institution :
Dept. of Electron. & Electr. Eng., Loughborough Univ., UK
Abstract :
This paper is concerned with the serial data transmission of 9600 bit/sec over a HF radio link and the performance of a serial modem measured in terms of its error rate. Initially a model of a synchronous serial QAM digital data transmission system, which includes the model of the HF link, is presented suitable for computer simulation. A model of a near maximum likelihood detector, based upon the reduced state Viterbi algorithm, operating together with a predetection filter and an adaptive HF channel estimator, is described. Computer simulations have been carried out to show the performance of the complete system (in terms of bit error rate), in the presence of intersymbol interference and additive white Gaussian noise. The modem is a digital signal processor performing computer-like operations on sets of numbers
Keywords :
adaptive filters; data communication systems; digital radio systems; digital simulation; intersymbol interference; maximum likelihood estimation; modems; radio links; telecommunications computing; white noise; 9.6 kbit/s; HF; QAM; adaptive HF channel estimator; additive white Gaussian noise; bit error rate; computer simulation; high frequency radio links; intersymbol interference; near maximum likelihood detector; performance; predetection filter; reduced state Viterbi algorithm; serial data transmission; serial modem;
Conference_Titel :
Computer Modelling of Communication Systems, IEE Colloquium on
Conference_Location :
London
