A matched nonlinearity for phase estimation of a PSK-modulated carrier
IEEE Transactions on Information Theory
A survey of CORDIC algorithms for FPGA based computers
FPGA '98 Proceedings of the 1998 ACM/SIGDA sixth international symposium on Field programmable gate arrays
Digital Communication Receivers: Synchronization, Channel Estimation, and Signal Processing
Digital Communication Receivers: Synchronization, Channel Estimation, and Signal Processing
The CORDIC computing technique
IRE-AIEE-ACM '59 (Western) Papers presented at the the March 3-5, 1959, western joint computer conference
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Modern codes such as Turbo and LDPC codes operate at low signal-to-noise ratios, which makes carrier synchronization a challenging problem. Hence in many waveforms, some known symbols are inserted periodically into the data stream to achieve Data-Aided (DA) synchronization. However, these known symbols decrease the throughput of the transmissions. The data symbols which are unknown can also be used for synchronization, in which case it is known as Non Data Aided (NDA) synchronization. In this paper, we present an efficient structure which is almost the same for both the DA and NDA methods, especially suitable for implementation on Field Programmable Gate Arrays (FPGA). We discuss the implementation complexity and trade-offs involved in the FPGA implementation of this structure. We illustrate its utility by applying it a satellite communications waveform, popularly known as DVB-S2.