Robust Detection of Binary CPMs With Unknown Modulation Index
Reads0
Chats0
TLDR
The proposed detector is designed by adopting a simplified representation of a binary CPM signal with the principal component of its Laurent decomposition and is obtained by using the framework based on factor graphs and the sum-product algorithm.Abstract:
We consider soft-output detection of a binary continuous phase modulation (CPM) generated through a low-cost transmitter, thus characterized by a significant modulation index uncertainty, and sent over a channel affected by phase noise. The proposed detector is designed by adopting a simplified representation of a binary CPM signal with the principal component of its Laurent decomposition and is obtained by using the framework based on factor graphs and the sum-product algorithm. It does not require an explicit estimation of the modulation index nor of the channel phase and is very robust to large uncertainties of the nominal value of the modulation index. Being soft-output in nature, this detector can be employed for iterative detection/decoding of practical coded schemes based on a serial concatenation, possibly through a pseudo-random interleaver, of an outer encoder and a CPM modulation format.read more
Citations
More filters
Journal ArticleDOI
Low-Complexity Detection of Binary CPM With Small Modulation Index
Zhipeng Xi,Jiang Zhu,Yongming Fu +2 more
TL;DR: A low-complexity detector (LCD) for binary CPM with small modulation index is proposed, which can generate appropriate metrics for the soft decision decoding, which is desirable in a coded CPM system.
Journal ArticleDOI
Binary Continuous Phase Modulations Robust to a Modulation Index Mismatch
TL;DR: In this article, the authors consider binary continuous phase modulation (CPM) signals used in some recent low-cost and low-power consumption telecommunications standard and design new binary schemes with a much higher robustness, based on concatenation of a suitable precoder with binary input and a ternary CPM format.
Journal ArticleDOI
Estimation of Modulation Index for Partial Response CPM Signal
TL;DR: Two novel estimators for the CPM signal observed in an additive white Gaussian noise channel have been proposed and it is shown that the MoM estimator exhibits good MSE performance at low signal-to-noise ratio (SNR) while the BLUE estimator performs very well at high SNRs.
Journal ArticleDOI
On the Estimation of Modulation Index for Binary Full Response CPM Signals
TL;DR: Numerical performance analysis in terms of mean-squared error and bit-error rate shows that the method of moments estimator performs better at low signal-to-noise ratio (SNR), whereas the performance of the BLUE is close to MCRB at high SNR.
Journal ArticleDOI
GFSK Demodulation Using Sequential Monte Carlo Technique
TL;DR: This letter applies the Sequential Monte Carlo (SMC) approach along with a low complex detection algorithm to non-coherently demodulate a Gaussian frequency shift keying signal in Bluetooth receivers.
References
More filters
Journal ArticleDOI
Factor graphs and the sum-product algorithm
TL;DR: A generic message-passing algorithm, the sum-product algorithm, that operates in a factor graph, that computes-either exactly or approximately-various marginal functions derived from the global function.
Book
Digital Phase Modulation
TL;DR: The first text in bandwidth-efficient digital coded communication was published in this article, where the authors introduced the method of continuous phase modulation (CPM) coding, with full treatment of spectrum, minimum distance, trasnmitters and receivers.
Journal ArticleDOI
Exact and Approximate Construction of Digital Phase Modulations by Superposition of Amplitude Modulated Pulses (AMP)
TL;DR: It is shown that any constant amplitude binary phase modulation can also be expressed as a sum of a finite number of time limited amplitude modulated pulses (AMP decomposition), and new methods for computing autocorrelation and power frequency spectrum are derived.
Journal ArticleDOI
A decomposition approach to CPM
TL;DR: In this article, it was shown that any continuous-phase-modulation (CPM) system can be decomposed into a continuous phase encoder and a memoryless modulator in such a way that the former is a linear (modulo some integer P) time-invariant sequential circuit and the latter is also time invariant.
Related Papers (5)
Estimation of the Modulation Index of CPM Signals Based on Laurent's Decomposition
Dechen Xu,Yifeng Zhang +1 more
Low-Complexity Detection of Binary CPM With Small Modulation Index
Zhipeng Xi,Jiang Zhu,Yongming Fu +2 more