Use this URL to cite or link to this record in EThOS:
Title: Propagation studies and modulation techniques for a distributed architecture rural radio-telephone system
Author: Browne, Simon
ISNI:       0000 0001 3505 5982
Awarding Body: University of Warwick
Current Institution: University of Warwick
Date of Award: 1993
Availability of Full Text:
Access from EThOS:
Access from Institution:
The work described in this thesis forms part of the development of a novel digital distributed radio network. In particular, the areas of radio propagation and modulation are considered. Field measurements of radio channel characteristics made in Sierra Leone are described. The results are presented, together with a description of the implementation of the measuring equipment. Both transmission loss and channel impulse responses were measured. Measured loss values are compared with theoretical values calculated using standard routines. The measurements were made at a frequency of 53 MHz. The implementation of a spectrally efficient modulation scheme using a power efficient transmitter is detailed. Transmitter linearization schemes are described. Consideration is also given to filtering techniques applicable to look-up table based transmission. An overall transmitter has been produced, operating at 53 MHz, and the results are given.
Supervisor: Not available Sponsor: Science and Engineering Research Council
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: TK Electrical engineering. Electronics Nuclear engineering