Results 111 to 120 of about 215 (157)
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Blind multiuser detection: a subspace approach
IEEE Transactions on Information Theory, 1998Summary: A new multiuser detection scheme based on signal subspace estimation is proposed. It is shown that under this scheme, both the decorrelating detector and the linear minimum mean-square-error (MMSE) detector can be obtained blindly, i.e., they can be estimated from the received signal with the prior knowledge of only the signature waveform and ...
Xiaodong Wang 0001, H. Vincent Poor
exaly +2 more sources
Blind adaptive multiuser detection
IEEE Transactions on Information Theory, 1995This paper introduces an adaptive multiuser detector which converges (for any initialization) to the minimum mean-square error detector without requiring training sequences. This blind multiuser detector requires no more knowledge than does the conventional single-user receiver: the desired user's signature waveform and its timing.
U Madhow
exaly +3 more sources
Group-blind multiuser detection for uplink CDMA
IEEE Journal on Selected Areas in Communications, 1999Previously developed blind techniques for multiuser detection in code division multiple access (CDMA) systems lead to several near-far resistant adaptive receivers for demodulating a given user's data with the prior knowledge of only the spreading sequence of that user.
A Host-Madsen
exaly +2 more sources
Blind multiuser detection via interference identification
IEEE Transactions on Communications, 2002Previous results on blind multiuser detection apply in situations where the signal parameters of the users of interest are known, and those of the interferers; are unknown. In this paper, we consider the new paradigm of an N-user system, in which K users are active, and the problem is to detect G users of interest out of those K active users when the ...
M K Varanasi
exaly +4 more sources
Blind Multiuser Detection Based on Tikhonov Regularization
IEEE Communications Letters, 2011In code-division multiple-access (CDMA) system, ill-conditioning of the covariance matrix of the received signal may degrade the performance of minimum mean-squared error (MMSE) detector, especially when signal-to-noise ratio (SNR) is high and small data sets are available for covariance matrix estimation.
Li Hu, Xiyuan Zhou, Liwei Zhang
exaly +2 more sources
Adaptive transmitter optimization for blind and group-blind multiuser detection
IEEE Transactions on Signal Processing, 2003The linear subspace-based blind and group-blind multiuser detectors recently developed represent a robust and efficient adaptive multiuser detection technique for code-division multiple-access (CDMA) systems. In this paper, we consider adaptive transmitter optimization strategies for CDMA systems operating in fading multipath environments in which ...
Daryl Reynolds, Xiaodong Wang 0001
exaly +2 more sources
Spatio-temporal blind adaptive multiuser detection
IEEE Transactions on Communications, 2000We propose blind multiuser detection schemes with antenna arrays, which is based on signal subspace estimation. They are a multichannel extension of the decorrelating and minimum mean-square-error detectors, and therefore they share their immunity to near-far effects.
K Abed-Meraim
exaly +2 more sources
Blind adaptive multiuser detection based on Kalman filtering
IEEE Transactions on Signal Processing, 2002Although several Kalman filtering algorithms have been presented for adaptive multiuser detection, none is "blind" due to requiring training data sequences and/or more knowledge than the spreading waveform and delay of the desired user. This paper proposes a novel blind adaptive multiuser detector based on Kalman filtering and compares it with ...
Xian-Da Zhang
exaly +2 more sources
Optical CDMA communication systems with multiuser and blind detection
IEEE Transactions on Communications, 1999We study the use of multiuser detection and blind detection techniques to improve the performance of optical code division multiple access (OCDMA) systems. First, a new multiuser receiver known as the interference suppression receiver is proposed. Second, we study the use of blind detection by proposing a blind receiver for OCDMA systems.
Jimmy T. K. Tang, Khaled Ben Letaief
exaly +3 more sources