Hybrid Coherent and Frequency-Shifted-Reference Ultrawideband Radio

Ultrawideband communications often occur in heterogeneous networks where different receivers have different complexity and energy consumption requirements. In this case it is desirable to have a modulation scheme that works well with coherent receivers as well as simpler receivers, namely transmitted-reference (TR) receivers. In particular, we consider a TR scheme that employs slightly frequency-shifted reference (FSR) signals [15] and thus avoids one of the main drawbacks of conventional TR schemes, namely the need to implement a delay line. We propose and analyze a modulation scheme that works well with both FSR receivers (where it has the same performance as conventional TR modulation), and coherent receivers. IEEE Global Telecommunications Conference 2007 This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all...

• Type: Conference
• Year: 2007
• Where: GLOBECOM
• Authors: Huaping Liu, Andreas F. Molisch, Shiwei Zhao, Dennis Goeckel, Philip V. Orlik
• Keywords: Coherent Receivers, Electric Research Laboratories, GLOBECOM 2007, Mitsubishi Electric Research, Telecommunications