Positioning in a Multipath Channel Using OFDM Signals with Carrier Phase Tracking

In developing a high accuracy terrestrial radio navigation system, as a complement to a global navigation satellite system (GNSS), it is recognized that the performance of time delay estimation is proportional to, and thereby limited by, the signal bandwidth. Given a possibly narrow signal bandwidth, the central carrier phase can,...

Sparse Signal Bands Selection for Precise Time-based Ranging in Terrestrial Positioning

Time-based ranging accuracy is inversely proportional to the signal bandwidth. A larger the signal bandwidth leads to a higher accuracy of time delay estimation, but more complex hardware is needed. Alternatively, we explore the idea of using multiple narrow signal bands (e.g., 10 MHz of each) to create a large virtual signal bandwidth, which...

An Analytical Performance Evaluation of a Coded OFDM-Based Transmission Scheme, using a Markov Model for a Frequency Selective Channel

In this report the performance of an error-correcting code on a wide-band frequency selective Rayleigh fading channel with an OFDM- based transmission scheme is estimated by means of an analytical model. In the European dTTb project, a transmission scheme for a new digital terrestrial TV system is under development. This scheme uses OFDM to...