04-10-2017, 09:25 AM
Today's cellular networks are limited by interference and only become more and more in the future because of the many users who need to share the spectrum for high-speed multimedia communication. Despite the huge amount of academic and industrial research over the past 20 years on receivers with interference and the large performance improvements promised by these multiuser techniques, today's receivers generally treat interference as background noise.
The performance of current cellular networks is limited by interference rather than by any other single effect. Interference differs from noise in that it is caused by other man-made devices, often most devices designed to use the same network, making it particularly interesting and aggravating. While conventional noise can be overcome by increasing the transmission power, global interference is increased with this simplistic approach, since
neighboring devices now have to deal with even more interference than before. In both centralized and ad hoc networks, the overall system capacity can be maximized by having each device use the required minimum transmission power, so that interference to other devices in the network is also minimized.
The performance of current cellular networks is limited by interference rather than by any other single effect. Interference differs from noise in that it is caused by other man-made devices, often most devices designed to use the same network, making it particularly interesting and aggravating. While conventional noise can be overcome by increasing the transmission power, global interference is increased with this simplistic approach, since
neighboring devices now have to deal with even more interference than before. In both centralized and ad hoc networks, the overall system capacity can be maximized by having each device use the required minimum transmission power, so that interference to other devices in the network is also minimized.