A Qualitative Study of Signal Strength Coverage of Digital Terrestrial Television in Ibadan South Western Nigeria

Abstract

This work investigated the quality of signal strength coverage of the existing Digital Terrestrial Television (DTTV) operator in Nigeria using Startimes Ibadan as a case study. Signal strength and altitude data at different locations within a 40km radius of the Startimes transmitting station were measured to determine the quality of signal strength reception of Startime's digital television in Ibadan metropolis. A signal analyzer, a 10-meter cable, Yaggi external antenna and Global Positioning System (GPS) were used for the measurements at various locations in Ibadan within 40km radius distance of Startimes based station at Agodi in Ibadan. The city was grouped into six different zones for proper signal testing and efficient data collation. Parameters such as signal strength, distance, altitude, signal to noise ratio, modulation error rate, pre-bit error rate and post-bit-error rate were measured and recorded. The effects of distance and altitude were analyzed. It was observed from the result that there is a direct relationship between power level and altitude. In addition, there is an inverse relationship between power level and distance.

Investigation and Modelling of Path Losses associated with Digital Terrestrial Television Communication Link Within the UHF band in Nigeria

“…The average values of the Received Signal Strength measured at each receiving sites, the corresponding Pathloss, the elevation of each receiving sites as well as the corresponding location-based Surface radio refractivity of each site, evaluated from the weather parameters recorded, were grouped into wet and dry seasons and presented in Table 4. The proposed Pathloss models for Wet and Dry seasons in (21) and (22) were used to predict pathloss as presented in Table 5. These values were presented alongside the Measured Pathloss for comparison.…”

“…Aside from the fact that digital TV signals are stronger and more resistant to interference and attenuation than analogue TV signals, greater RSS levels are attainable during the wet season since there is less dust in the sky (which degrades transmitted signals. Similarly for Ibadan in Nigeria's South-Western area, in [21] analysis into the association between transmitting station distance and RSS. The RSS level was determined to decrease as the distance between the sending and receiving stations increased.…”

Digital terrestrial television in Nigeria: A technical review of path loss modeling and optimization techniques

“…The relationship between the distance between the transmitting station and RSS was investigated in [41] using Ibadan, the South-Western part of Nigeria as a case study. It was found that the RSS level decreases with an increase in the separation between the transmitting and receiving stations.…”