Results 1 to 10 of about 204,888 (292)
Concurrent Modified Constant Modulus Algorithm and Decision Directed Scheme With Barzilai-Borwein Method [PDF]
Frontiers in Neurorobotics, 2021 At present, in robot technology, remote control of robot is realized by wireless communication technology, and data anti-interference in wireless channel becomes a very important part.
Tongtong Xu +5 more
doaj +2 more sources
Two-Dimensional AOA Estimation Based on a Constant Modulus Algorithm
International Journal of Antennas and Propagation, 2017 We propose a two-dimensional (2D) angle of arrival (AOA) estimator using the algebraic constant modulus algorithm (ACMA). This algorithm was originally introduced to estimate the one-dimensional (1D) AOA.
Saleh O. Al-Jazzar +2 more
doaj +2 more sources
An analytical constant modulus algorithm
IEEE Transactions on Signal Processing, 1996 Iterative constant modulus algorithms such as Godard (1980) and CMA have been used to blindly separate a superposition of cochannel constant modulus (CM) signals impinging on an antenna array. These algorithms have certain deficiencies in the context of convergence to local minima and the retrieval of all individual CM signals that are present in the ...
Alle-Jan van der Veen +1 more
openaire +4 more sources
New constant modulus algorithm suitable for nonconstant modulus signals
Tongxin xuebao, 2011 The steady-state mean square error（MSE） of constant modulus algorithm（CMA） can not converge to zero for nonconstant modulus signals.By changing the multimodulus of nonconstant modulus source to single modulus,a new cost function was defined.And the new ...
RAO Wei1 +5 more
doaj +3 more sources
Modified constant modulus algorithm for polarization-switched QPSK
Optics Express, 2011 By using a generalized cost function, a modified constant modulus algorithm (CMA) that allows polarization demultiplexing and equalization of polarization-switched QPSK is found. An implementation that allows easy switching between the conventional and the modified CMA is described.
Pontus, Johannisson +5 more
openaire +3 more sources
Statistical performance analysis of the algebraic constant modulus algorithm
IEEE Transactions on Signal Processing, 2002 This paper presents a large sample analysis of the covariance of the beamformers computed by the analytical constant modulus algorithm (ACMA) method for blindly separating constant modulus sources. This can be used to predict the signal-to-interference plus noise ratio (SINR) performance of these beamformers, as well as their deviation from the ...
A -J Van Der Veen
exaly +4 more sources
Mathematics, 2023 This paper proposes a wireless channel equalization method applied to the constant modulus blind equalization system, which addresses the slow convergence and strong randomness in the initialization of equalizer weights in the constant modulus blind ...
Xiaolin Wang +4 more
doaj +1 more source
Wirtinger Flow Meets Constant Modulus Algorithm: Revisiting Signal Recovery for Grant-Free Access
IEEE Transactions on Signal Processing, 2021 In this work, we analyze the convergence of constant modulus algorithm (CMA) in blindly recovering multiple signals to facilitate grant-free wireless access. The CMA typically solves a non-convex problem by utilizing stochastic gradient descent.
Carlos Feres, Z. Ding
semanticscholar +1 more source
Constant-Modulus Waveform Design for Dual-Function Radar-Communication Systems in the Presence of Clutter [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2023 We investigate the constant-modulus (CM) waveform design for dual-function radar communication systems in the presence of clutter. To minimize the interference power and enhance the target acquisition performance, we use the signal-to-interference-plus ...
Wenjun Wu, Bo Tang, Xuyang Wang
semanticscholar +1 more source
Efficient Algorithms for Constant-Modulus Analog Beamforming [PDF]
IEEE Transactions on Signal Processing, 2022 The use of a large-scale antenna array (LSAA) has become an important characteristic of multi-antenna communication systems to achieve beamforming gains. For example, in millimeter wave (mmWave) systems, an LSAA is employed at the transmitter/receiver end to combat severe propagation losses.
Aakash Arora +4 more
openaire +2 more sources