Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
Mobile Telephony has witnessed considerable growth over the past few years. Since the dawn of the first analogue systems, the volume of subscribers was constantly increasing.
In recent years GSM networks have witnessed an unparalleled growth and today they are available in almost all countries and regions around the globe. Although EDGE technology has been available sincesome time, it has not witnessed considerable spread among operators. However, as a step towards complying with regulators, operators need to cover rural areas with 3G services. From hence, EDGE was the technology of choice since it provides coverage and high data rates ina scenario where the population is scarce and high throughput is wanted.
This thesis investigates the throughput coverage performance of recently deployed EDGE networks in rural forest areas. Thereby providing an insight as to what bit rates to expect on the downlink in a scenariowhich is to be carried out in the 3 GSM rollout plan for several operators.
A case study is carried out in the forest areas around Jonkoping where EDGE capabilities are being deployed. A selection of typical forest environments and different sites have been chosen so as to provide asample of forest areas across Sweden. Measurements in those test areas have been carried out and later extracted and analyzed. The results reveal that the throughput in those areas was below expectations and thatthe main reason lied in the high block error rate experienced even when the signal to interference-noise ratio is high. The MCS selection was alsonot the same as anticipated by simulations, due to the high Block ErrorRate which forced the base station to choose lower Modulation Coding Schemes than the ones perferred at a specific signal level. In the end a rough expectation of the throughput coverage is concluded from theresults acquired by this thesis and those provided by a thesis carried in parallel, which involved a parallel study of the propagation model in the same areas.
2006. , 47 p.