General CPM and its capacity

Padmanabham, K.; Ranganathan, Shyam; Sundaravaradhan, S.P.; Collins, O.M.

doi:10.1109/isit.2005.1523437

Cited by 28 publications

(26 citation statements)

References 7 publications

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“…We remark again that the values of information rate shown in Fig. 1 are achievable by a MAP single-user receiver designed for the channel model (4).…”

Section: Ultimate Performance Limitsmentioning

confidence: 67%

“…Nonetheless, although the power of a CPM signal is typically concentrated in a small portion of the spectrum [3], the power spectral density (PSD) has rigorously an infinite support, so that a suitable bandwidth definition must be assumed. The most commonly employed definition is that based on the power concentration, which defines the signal bandwidth as the bandwidth that contains a given fraction (being this fraction a parameter) of the overall power [4], [5]. A different definition is used in [6], which is based on the Carson's rule and exhibits a nice mathematical tractability.…”

Section: Introductionmentioning

confidence: 99%

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Design of spectrally-efficient continuous phase modulations

Barbieri

Fertonani

Colavolpe

2008

2008 10th International Workshop on Signal Processing for Space Communications

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Abstract-We investigate the spectral efficiency of continuous phase modulations (CPMs). To this end, we need an effective bandwidth definition for a CPM signal, whose power spectral density has in principle an infinite support. The definition we adopt is based on the spacing between adjacent carriers in a frequency division multiplexed CPM system. We consider the inter-channel interference, that depends on the channel spacing, and we evaluate the spectral efficiency achievable by a singleuser receiver in the considered multi-channel scenario. We then optimize the channel spacing with the aim of maximizing the spectral efficiency, showing that impressive improvements with respect to the spectral efficiency achieved without optimizing the channel spacing can be achieved.

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“…We remark again that the values of information rate shown in Fig. 1 are achievable by a MAP single-user receiver designed for the channel model (4).…”

Section: Ultimate Performance Limitsmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Design of spectrally-efficient continuous phase modulations

Barbieri

Fertonani

Colavolpe

2008

2008 10th International Workshop on Signal Processing for Space Communications

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“…By modeling CPM using FSM (Finite State Machine), SIR can be estimated via BCJR algorithm [3]. Hereafter, a reliable estimate of the capacity was extended to genera-lized CPM scheme [4]. On the other hand, the theoretical limits on the bandwidth efficiency of CPM signals were estimated by implementing the Carson's Rule bandwidth measure [5].…”

Section: Introductionmentioning

confidence: 99%

On the Capacity of CPM MIMO Systems over Band-Limited Channels

Lei¹,

Xiao²

2017

IJCNS

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Capacity analysis is a fundamental and important issue for continuous phase modulation (CPM) signals. In the letter, we investigate the capacity formula of CPM MIMO systems. Using Finite State Machine (FSM), the CPM symbols can be modeled as Markov source by combining channel and CPM modulation. Thus the capacity of CPM signals can be derived in form of the erroneous probability and normalized CPM bandwidth. In addition, the capacity of CPM MIMO systems is derived over Gaussian channels and Rayleigh channels. Finally, numerical simulations are implemented according to various parameters such as modulation scheme, modulation index h, memory length L, and antenna configuration.

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“…The symmetric information rate of coherent CPM was considered by Ganesan [2] and Padmanabham et al [3]. In [4], the symmetric information rate was used to jointly optimize the modulation index ℎ and code rate of coherent systems under a bandwidth constraint and strategies for code design were given.…”

Section: Introductionmentioning

confidence: 99%

Iterative Multisymbol Noncoherent Reception of Coded CPFSK

Valenti

Cheng²,

Torrieri

2010

IEEE Trans. Commun.

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Abstract-A multisymbol noncoherent receiver suitable for coded continuous-phase frequency-shift keying is developed and analyzed. Unlike coherently detected signals, the modulation index of the waveform does not need to be rational with a small denominator, and the oscillator only needs to be stable for the duration of a small group of symbols. The receiver is analyzed in terms of its symmetric information rate, demonstrating its potential when a capacity-approaching code is used and enabling the joint optimization of code rate and modulation index under a bandwidth constraint. The information-theoretic results are corroborated by bit-error-rate curves generated using a standardized turbo code in conjunction with iterative demodulation and decoding. It is shown that, while more robust than a system with coherent reception, the proposed system offers superior energy efficiency compared with conventional singlesymbol noncoherent reception.

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General CPM and its capacity

Cited by 28 publications

References 7 publications

Design of spectrally-efficient continuous phase modulations

Design of spectrally-efficient continuous phase modulations

On the Capacity of CPM MIMO Systems over Band-Limited Channels

Iterative Multisymbol Noncoherent Reception of Coded CPFSK

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