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IEEE TRANSACTIONS ON COMMUNICATIONS, ACCEPTED FOR PUBLICATION 1 On the Performance of OFDM-Based
 

Summary: IEEE TRANSACTIONS ON COMMUNICATIONS, ACCEPTED FOR PUBLICATION 1
On the Performance of OFDM-Based
Amplify-and-Forward Relay Networks in the
Presence of Phase Noise
Payam Rabiei, Student Member, IEEE, Won Namgoong, Senior Member IEEE,
and Naofal Al-Dhahir, Fellow IEEE
Abstract--We investigate the performance of orthogonal fre-
quency division multiplexing (OFDM)-based dual-hop amplify-
and-forward (AF) relay networks in the presence of phase noise
(PHN). We show that the use of an AF relay may not be
beneficial compared to a direct transmission in the presence
of PHN. Using outage probability analysis, an upper bound on
the allowable PHN level is derived which ensures that the dual-
hop outperforms the direct transmission. To improve dual-hop
transmission performance in the presence of PHN, we propose a
reduced-complexity joint channel and PHN estimator using full-
pilot OFDM symbols for AF relay transmission. The proposed
approach achieves a lower mean squared error compared to the
conventional channel estimator. In addition, we derive a joint
data detection and PHN estimation scheme for comb-type data

  

Source: Al-Dhahir, Naofal - Department of Electrical Engineering, University of Texas at Dallas

 

Collections: Engineering