Design of mobile radio communication system at millimetre-waves and BER measurements for indoor environments

Abstract

The demand for wireless broadband multimedia services, seeks exploitation of the widely available spectrum surrounding the 60 GHz operating frequency, which can support high speed indoor WLANs. The need to estimate the system performance in indoor mobile channels is necessary for future system design and applications.

The studies reported in this thesis are concerned with the design of a digitally modulated broadband system at 60 GHz and the estimation of Bit Error Rate (BER) performance in indoor mobile channels. A digital mobile radio system and high precision computer controlled positioning system have been designed and implemented to conduct measurements in a long narrow corridor and an empty rectangular room. The correlation properties of Pseudo-Random Binary Sequence (PRBS) are employed to develop the offline processing routines offering the recovery of baseband signal and BER estimation.

Based on a comprehensive set of measurements data, the percentage of the time, when the indoor channel was free of errors, has been investigated and estimated for the data rate up to 50 Mbit/s using different antenna configurations. The theoretical BER best fit model has been used to describe the relationship between SNR and BER. The results have shown that the SNR of 20 dB is required to achieve the target BER of 5.7x10^-3 for "fair" quality of speech.

Date of Award	Mar 2009
Original language	English
Supervisor	Akram Hammoudeh (Supervisor) & David Scammell (Supervisor)