المجلة الدولية للعلوم والتقنية

Wireless broadband technology is one of the most common ways to provide the Internet; due to the capacity and speeds it provides and the geographical area it covers, in addition to not requiring cable extensions for subscribers.Althoughthe advantages offered by fixed wireless broadband networks, users suffer from fluctuation in service and weak signal. In this paper, the quality of communication for Internet subscribers was studied using wireless broadband network technology in a semi-rural area in the city of Misrata, based on two criteria: the received signal strength indicator (RSSI) and the signal to noise ratio (SNR). Through field measurements of subscribers taken on the main tower in the region, which contains four sector antennas, the RSSI measure gave a percentage of 37.7% - 22.4% for the uplink and downlink, respectively, of subscribers receiving a high connection to the Internet, while 54.09% - 56.83% for the uplink and downlink respectively of subscribers receive astable connection, while speed fluctuation and the possibility of an interruption occur at 7.65% - 16.39% for the uplink and downlink respectively, and finally the percentage is 0% - 1.09% for the uplink and downlink Downstream subscribers are subject to frequent interruptions and signal loss.While the SNR measurement gave suitable rates for all subscribers as it achieved at least the minimum required value (SNR≥20 dB). Key Words: WiBB Network, RSSI,SNR,Cambuim Network.