Results 71 to 80 of about 4,308 (180)
Intelligent Diagnosis of Urban Underground Drainage Network: From Detection to Evaluation
Structural Control and Health Monitoring, Volume 2024, Issue 1, 2024.During the process of urban development, there is large‐scale laying of underground pipeline networks and coordinated operation of both new and old networks. The underground concrete drainage pipes have become a focus of operation and maintenance due to their strong concealment and serious corrosion.
Daming Luo +3 more
wiley +1 more source
Blind Reduced-Rank MMSE Detector for DS-CDMA Systems
EURASIP Journal on Advances in Signal Processing, 2002 We first develop a reduced-rank minimum mean squared error (MMSE) detector for direct-sequence (DS) code division multiple access (CDMA) by forcing the linear MMSE detector to lie in a signal subspace of a reduced dimension.
Ge Hongya, Akansu Ali N, Cai Xiaodong
doaj +1 more source
International Journal of Antennas and Propagation, 2011 The aim of this paper is to combine smart antenna beamforming and RAKE receiver in wideband code division multiple access (WCDMA). The proposed method combines spatial diversity as well as temporal diversity to improve the performance and overcome both ...
Shahriar Shirvani-Moghaddam +1 more
doaj +1 more source
Performance analysis of a MOE blind adaptive space-time multiuser detection algorithm
Tongxin xuebao, 2005 A novel space-time multi-user detection algorithm was proposed, which combined a power of covariance matrix R technique with MOE blind adaptive space-time multi-user detection.
LU Ling-yun, XIAO Yang
doaj +2 more sources
EURASIP Journal on Wireless Communications and Networking, 2006 The problem of joint channel estimation, equalization, and multiuser detection for a multiantenna DS/CDMA system operating over a frequency-selective fading channel and adopting long aperiodic spreading codes is considered in this paper.
Buzzi Stefano
doaj +2 more sources
A Subspace Approach to Blind Multiuser Detection for Ultra-Wideband Communication Systems
EURASIP Journal on Advances in Signal Processing, 2005 Impulse radio-based ultra-wideband (UWB) communication systems allow multiple users to access channels simultaneously by assigning unique time-hopping codes to individual users, while each user's information stream is modulated by pulse-position ...
Liu Ping, Xu Zhengyuan, Tang Jin
doaj +1 more source
Journal of Computer Networks and Communications, 2013 In NDMA (network diversity multiple access), protocol-controlled retransmissions are used to create a virtual MIMO (multiple-input multiple-output) system, where collisions can be resolved via source separation.
Ramiro Samano-Robles, Atilio Gameiro
doaj +1 more source
Space-Time Coded MC-CDMA: Blind Channel Estimation, Identifiability, and Receiver Design
EURASIP Journal on Advances in Signal Processing, 2002 Integrating the strengths of multicarrier (MC) modulation and code division multiple access (CDMA), MC-CDMA systems are of great interest for future broadband transmissions. This paper considers the problem of channel identification and signal combining/
Li Hongbin, Sun Wei
doaj +1 more source
Multi-User Joint Detection Using Bi-Directional Deep Neural Network Framework in NOMA-OFDM System. [PDF]
Sensors (Basel), 2022 Rahman MH +5 more
europepmc +1 more source
EURASIP Journal on Advances in Signal Processing, 2002 A downlink receiver is proposed for space-time block coded CDMA systems operating in multipath channels. By combining the powerful RAKE receiver concept for a frequency selective channel with space-time decoding, it is shown that the performance of ...
Jayaweera Sudharman K, Poor H Vincent
doaj +1 more source