Due to the underutilization of scarce radio spectrum resources, there is a major shift from an exclusive use model to a spectrum sharing model. This model has been successful in unlicensed bands where wireless standards such as Bluetooth and WLAN IEEE802.11 have flourished. In order to extend this model to licensed bands, a smart radio is required. The cognitive radio is a smart radio that leve...

This paper presents a multi-mode Software Defined Radio receiver based on a bandpass sampling receiver. Our aim is to develop a receiver that can provide a high bandwidth of reception in order to do the demodulation of several wireless standards signals accomplishing each of the required specifications, only using a single radio front-end.

Radio transmissions traditionally use one antenna at the transmitter and one antenna at the receiver. This system is termed Single Input Single Output (SISO). Both the transmitter and the receiver have one RF chain (that's coder and modulator). SISO is relatively simple and cheap to implement and it has been used age long since the birth of radio technology. It is used in radio and TV broadcast...

The digital transition of analog TV is rapidly taking place throughout the world. However, the digital transition of radio is progressing at a slower rate. Diverse standards are being considered for adoption and different countries have different frequencies allocated for digital radio. As a consequence, the progress in the development of digital radio receiver chipsets has been rather stagnant...