Journal ArticleDOI
Optimum Performance of Suppressed Carrier Receivers with Costas Loop Tracking
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TLDR
The performance of suppressed carrier receivers with Costas loop tracking is optimized by proper choice of loop arm filter bandwidth, and it is shown that for a variety of passive arm filter types, there exists an optimum filter bandwidth in the sense of minimizing the loop's squaring loss.Abstract:
The performance of suppressed carrier receivers with Costas loop tracking is optimized by proper choice of loop arm filter bandwidth. In particular, it is shown that for a variety of passive arm filter types, there exists, for a given data rate and data signal-signal-to-noise ratio, an optimum filter bandwidth in the sense of minimizing the loop's squaring loss. For the linear theory case, this is equivalent to minimizing the loop's tracking jitter. When symbol synchronization is known, it is shown that by replacing the passive arm filters with active filters, i.e., integrate-and-dump circuits, one can achieve an improvement in carrier-to-noise ratio of as much as 4 to 6 dB depending on the passive arm filter type used for comparison and the value of data signal-to-noise ratio (SNR).read more
Citations
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TL;DR: In this paper, the authors presented five additional techniques that can be used to reconstruct the L2 carrier without knowledge of the W-code, including code-aided L2 costas loop with W-bit integrate and dump arm filtering, P-code aided L1, L2 cross correlation, Soft decision Z-tracking, Optimum L2 demodulation motivated by maximum a posteriori (MAP) estimation theory, and linear approximation of the MAP approach.
References
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Book
Telecommunication systems engineering
TL;DR: This classic graduate- and research-level texty by two leading experts in the field of telecommunications is essential reading for anyone workign today in space and satellite digital communicatiions and those seeking a wider background in statistical communication theory and its applications.
Journal ArticleDOI
An Optimum Phase Reference Detector for Fully Modulated Phase-Shift Keyed Signals
TL;DR: In this paper, an optimum receiver structure for estimating a phase reference from the PSK signal itself is derived and its realization discussed and it is shown that at low signal-to-noise ratios, the optimum detector can be realized with a Costas loop.
Journal ArticleDOI
Optimum Design and Performance of Costas Recievers Containing Soft Bandpass Limiters
TL;DR: Several key questions concerning the mechanization and design of a Costas receiver for reconstruction of a carrier from a suppressed carrier signal are investigated and typical numerical results are given and graphically demonstrated in SNR regions of practical interest.