A low complexity baseband receiver for direct conversion DECT-based portable communication systems

Portable communication systems with multiservice capabilities are in ever increasing demand during the last few years. This together with the rapid advances in electronic technology and integration strongly favours the development of small size low power wireless terminals. An attractive technique to achieve compactness and low cost is to employ zero-IF transceiver architecture. We present an all-digital low complexity baseband receiver for a DECT radio system employing the direct conversion approach. The receiver is based on a newly developed symbol rate differential detector. We also investigate the performance of feed-forward algorithms for automatic frequency collection, symbol timing estimation and slot synchronization.