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Journal ArticleDOI

A BPSK/QPSK Timing-Error Detector for Sampled Receivers

F. Gardner
- 01 May 1986 - 
- Vol. 34, Iss: 5, pp 423-429
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TLDR
A simple algorithm for detection of timing error of a synchronous, band-limited, BPSK or QPSK data stream is proposed and derivation of the s curve reveals a sinusoidal shape.
Abstract: 
A simple algorithm for detection of timing error of a synchronous, band-limited, BPSK or QPSK data stream is proposed. The algorithm requires only two samples per symbol for its operation. One of the two samples is also used for the symbol decision. Derivation of the s curve reveals a sinusoidal shape.

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Citations
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Journal ArticleDOI

Coherent optical QPSK intradyne system: concept and digital receiver realization

F. Derr
- 01 Sep 1992 - 
TL;DR: In this paper, a phase diversity receiver, called an intradyne receiver, with an orthogonal electrical demodulation is proposed to keep the signal processing bandwidth low, which is mostly due to the low local laser power and the influence of the receiver input noise.
Journal ArticleDOI

End-to-End Energy Modeling and Analysis of Long-Haul Coherent Transmission Systems

Bipin Sankar Gopalakrishna Pillai, +6 more
- 17 Jun 2014 - 
TL;DR: It is found that receiver energy consumption dominates in transmission systems that use electronic dispersion compensation over long transmission distances, and for short transmission distances where hard-decision decoding is adequate for both modulation formats, DP-16-QAM is more energy efficient than DP-QPSK.
Proceedings ArticleDOI

Demonstration of a coherent UDWDM-PON with real-time processing

Sylvia Smolorz, +4 more
TL;DR: In this article, a filterless coherent PON with channel spacing down to 2.8 GHz and real-time processing in an FPGA is demonstrated and verified experimentally using SSB generation at the OLT and fully integrated ONU transceivers.
Journal ArticleDOI

A Multigigabit Millimeter-Wave Communication System With Improved Spectral Efficiency

Val Dyadyuk, +6 more
TL;DR: In this article, the authors describe the details of a new method for improved spectral efficiency in a multigigabit millimeter-wave communication system, and the outdoor and indoor test results of a 6Gbit/s concept demonstrator in the 81-86GHz frequency band.
Patent

Radio communication system employing spectral reuse transceivers

R. Brent Saunders, +6 more
Abstract: A spectral reuse transceiver-based communication system conducts communications between a master site and a plurality of remote sites using a selected portion of a communication bandwidth containing a plurality of sub-bandwidth channels. Each remote site transceiver monitors the communication bandwidth for activity on the sub-bandwidth channels, and informs a master site transceiver which sub-bandwidth communication channels are absent communication activity and therefore constitute clear channels. The master site transceiver compiles an aggregate list of clear channels from all the remote sites and then broadcasts the aggregate list to the remote sites. The master site and a remote site then conduct communications therebetween by frequency-hopping and/or orthogonal frequency multiplexing among the clear channels using an a priori known PN sequence.
References
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Journal ArticleDOI

Timing Recovery in Digital Synchronous Data Receivers

K. Mueller, +1 more
- 01 May 1976 - 
TL;DR: A new class of fast-converging timing recovery methods for synchronous digital data receivers is investigated, and a general method is outlined to obtain near-minimum-variance estimates of the timing offset with respect to a given steady-state sampling criterion.
Book

Telecommunication systems engineering

William C. Lindsey, +1 more
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

Carrier and Bit Synchronization in Data Communication--A Tutorial Review

L. Franks
- 01 Aug 1980 - 
TL;DR: This paper examines the problems of carrier phase estimation and symbol timing estimation for carrier-type synchronous digital data signals, with tutorial objectives foremost.
Journal ArticleDOI

Statistical Properties of Timing Jitter in a PAM Timing Recovery Scheme

L. Franks, +1 more
- 01 Jul 1974 - 
TL;DR: A new technique is presented for evaluating the performance of a popular type of timing recovery circuit for baseband synchronous pulse amplitude modulation (PAM) data signals and expressions for rms phase fluctuation in the timing wave are presented.
Journal ArticleDOI

Timing Recovery in Digital Subscriber Loops

O. Agazzi, +3 more
- 01 Jun 1985 - 
TL;DR: Emphasis is on those techniques that lend themselves to implementation in MOSLSI technology, where the objective requirement is that timing recovery be implemented on a sampled-data signal (with the minimum possible sampling rate where EC is used).