Timing and Carrier Synchronization With Channel Estimation in Multi-Relay Cooperative Networks

Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
Multiple distributed nodes in cooperative networks generally are subject to Multiple Carrier Frequency Offsets (MCFOs) and Multiple Timing Offsets (MTOs), which result in time varying channels and erroneous decoding. This paper seeks to develop estimation and detection algorithms that enable cooperative communications for both Decode-and-Forward (DF) and Amplify-and-Forward (AF) relaying networks in the presence of MCFOs, MTOs, and unknown channel gains. A novel transceiver structure at the relays for achieving synchronization in AF-relaying networks is proposed. New exact closed-form expressions for the Cram?r-Rao Lower Bounds (CRLBs) for the multi-parameter estimation problem are derived.

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