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We propose a simple and robust carrier frequency recovery (CFR) scheme for DVB-S2 receivers. The proposed coarse CFR scheme employs a modified Mengali and Morelli (M&M) algorithm and recovers a coarse carrier frequency offset (CFO) accurately. After coarse CFR, a fine CFR scheme that employs a simple pilot block correlation algorithm recovers a residual CFO. The proposed scheme shows a bit error...
In relating the use of consumer-grade equipment, Carrier Synchronization is a difficult task for DVB-S2 receivers, which have to operate with a large initial Carrier Frequency Offset (CFO) yet needing to achieve relatively high estimation precisions. For these reasons, conventional Carrier Frequency Recovery schemes for DVB-S2 systems need significant hardware complexity. In contrast, this paper proposes...
In this paper, we propose a Coarse Symbol Timing Synchronization (CSTS) algorithm for OFDM systems that is robust to a multi-path fading channel. Based on the fact that multi-path channel distorts the correlation value within a guard interval, we employ a variable-length window for correlation in CSTS. Simulation results show that the proposed method outperforms the conventional correlation methods...
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