Joint Carrier Phase Estimation and Data Detection Algorithms for Multi-h CPM Data Transmission

Liebetreu, John

doi:10.1109/tcom.1986.1096649

Cited by 24 publications

(8 citation statements)

References 12 publications

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“…2) Memoryless modulation (PSK) is used in [4], but we use CPM that rules out abrupt 180-degree phase shifts in the transmitted signal. 1 Definitions used: mean, …”

Section: B Algorithm-bmentioning

confidence: 99%

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Phase Noise Mitigation in Serially Concatenated Continuous Phase Modulation with the Sum-Product Algorithm

Bokolamulla

Lim

Aulin

2006

2006 IEEE International Symposium on Information Theory

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We use the sum-product algorithm to handle the problem of phase noise (PN) in the detection of a serially concatenated continuous phase modulated system. Although optimal performance is not assured due to the loopy nature of the factor graph describing the problem, as well as simplifications made in the algorithm development, simulations show that significant performance gains are possible, and the gap between systems with and without PN can be reduced to about 1 dB using the proposed method. The increase in complexity compared to ignoring PN is small, and no periodic pilot symbols are inserted within a code word, although we assume the availability of a phase-locking mechanism to set the initial phase offset to a small range around zero. We use a different Gaussian approximation from what has been previously proposed, and this results in a less complex algorithm.

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“…2) Memoryless modulation (PSK) is used in [4], but we use CPM that rules out abrupt 180-degree phase shifts in the transmitted signal. 1 Definitions used: mean, …”

Section: B Algorithm-bmentioning

confidence: 99%

“…Different strategies to handle PN have been proposed in the literature. Liebetreu in [1] proposed a joint phase estimation and data detection algorithm based on the Viterbi algorithm. Peleg et.…”

Section: Introductionmentioning

confidence: 99%

Phase Noise Mitigation in Serially Concatenated Continuous Phase Modulation with the Sum-Product Algorithm

Bokolamulla

Lim

Aulin

2006

2006 IEEE International Symposium on Information Theory

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“…Typical CPM radios are baroque designs [21], [31] with one or more Viterbi decoders devoted to each of the following tasks: symbol timing [6], superband timing [10], frequency estimation [4], phase estimation [23]-not to mention the Viterbi decoder for the data [19]. Instead of following these well-worn designs, we offer a simple CPM receiver whose transparent design lets us swap the synchronizers in and out, shows the effect of multipath, adapts to the Walsh receivers, and reveals particular difficulties of CPM processing.…”

Section: A Multi-/i Receivermentioning

confidence: 99%

“…The most general synchronizer jointly estimates (Ac/), Afc,r). Because of mathematical difficulties, the parameters are also estimated separately: phase and data [19]; phase and timing [23]; frequency and data [24]. Synchronizers have been developed either ad hoc or a formal approach based on estimation theory.…”

Section: Synchronizersmentioning

confidence: 99%

Multi-h CPM Synchronization in Military Channels Phase 2: A Simulation Framework

Allen¹,

Wahlen²

2003

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Contimious phase modulation (CPM) is a well-established signahng technology that attains spectral efficiency by smoothing the phase signal. The spectral efficiency of CPM makes it a natural candidate for communications where bandwidth is limited, such as the non-SATCOM channels in the littoral environments. However, CPM receivers require synchronization with respect to data, timing, phase, and frequency. Research on various CPM synchronizers has been undertaken at Space and Naval Warfare Systems Command (SPAWAR). This report sets out a simulation framework that allows these synchronizers to be swapped in and out of a CPM receiver model to assess performance in a credible end-to-end RF simulation.

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“…This rotation can either be a constant, which simulates a static phase error, or a random Wiener-Levy process representing oscillator-or channel-induced jitter. It can be shown that the effect of the additive, white, Gaussian noise can be included on each component of the vector representation of the demodulator output rather than as time samples of the channel signal [ 4], [ 5]. A block diagram of this receiver is shown in Figure 3, which indicates how the orthogonal signal vector coordinates are generated [ 5].…”

Section: System Simulation Detailsmentioning

confidence: 99%

Computer Aided Performance Analysis of Multi-h CPM Data Transmission Systems in Practical Environments

Liebetreu

Wickert

1986

MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's

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This paper describes a technique for applying Monte Carlo simulation methods to a digital communication system employing a high-level carrier phase modulation scheme known as multi-h CPM [ ], [ 2 ]. This modulation format provides a means for achieving gains in the power/bandwidth tradeoff at the expense of increased complexity. Most papers in the literature on multi-h CPM deal with ideal environments in the respect that the effect of channel perturbations and nonideal modem implementations are not considered. The computer simulations described in this paper provide a means for gathering performance data for systems operating under channel bandlimiting, channel nonlinearities, phase error in the coherent reference at the receiver, symbol timing error, and decision depth in the Viterbi algorithm data detector. The simulations also provide detailed performance characterizations of algorithms designed for joint estimation of noisy carrier phase and data detection. Typical results for these cases are presented.

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Joint Carrier Phase Estimation and Data Detection Algorithms for Multi-h CPM Data Transmission

Cited by 24 publications

References 12 publications

Phase Noise Mitigation in Serially Concatenated Continuous Phase Modulation with the Sum-Product Algorithm

Phase Noise Mitigation in Serially Concatenated Continuous Phase Modulation with the Sum-Product Algorithm

Multi-h CPM Synchronization in Military Channels Phase 2: A Simulation Framework

Computer Aided Performance Analysis of Multi-h CPM Data Transmission Systems in Practical Environments

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