FAST TEMPLATE MATCHING FOR UMTS CODE KEYS WITH GRAPHICS HARDWARE

Template matching is a milestone application in Digital Signal Processing, and sets its roots in fundamental numeric filtering theory, as well as in time and frequency domain analysis. Radio signals, with mass spreading of high bandwidth cellular networks, have become in recent years much more critical to handle in terms of QoS (Quality of Service), QoE (Quality of Experience) and SLA (Service Level Agreement), putting mobile carriers in the need to monitor their network status in a more detailed and efficient way than in past. Here an efficient use case of GPU computing applied to fast signal processing will be illustrated, with particular interest in study and development of a SIMD Linear and FFT-based cross correlation of multiple code keys in air-captured streams for UMTS networks. Developed techniques have been used with success in a commercial available 3G geotagged scanning equipment.