DSC04562low.jpg

Imec saw a need in the market, inexpensive digital interface for radio networks, and filled it. With their development it looks like LTE has won the battle for 4G supremacy. The accelerated deployment of broadband personal communication coupled with the continuously increasing demand for large data rates results in an increasing spectrum scarcity. A dynamic access to the available spectrum would increase the throughput efficiency significantly. In licensed bands scenarios, dynamic spectrum access would for example allow personal mobile terminals to seamlessly set-up and maintain a reliable wireless connection. In unlicensed bands (the crowded 2.4 GHz band), it would bring great added value to products for which interruptions in the connectivity cannot be tolerated, for safety reasons in a control system (surveillance camera’s), or for comfort reasons in real-time applications (wireless conferencing, hearing aids,...) as it would improve connectivity even in the presence of many competing and interfering networks. Imec’s new spectrum sensing component was designed as a versatile digital engine to meet a wide variety of use cases, at low cost and low power overhead. The chip, which hosts a dedicated ASIP (application-specific integrated processor), can perform both flexible synchronization and spectrum sensing for high-throughput WLAN (802.11a-n), cellular standards (including the recent 3GPP-LTE), and digital broadcasting standards. The novel spectrum sensing component connects to imec’s in-house designed analog reconfigurable radio chip (SCALDIO) and imec’s programmable digital baseband platform conceived for 4G seamless connectivity (COBRA). As such, imec’s complete reconfigurable radio solutions enable multimode communication with efficient use of the spectrum.


Eavesdropper