Results 81 to 90 of about 527,650 (162)

High Capacity Downlink Transmission with MIMO Interference Subspace Rejection in Multicellular CDMA Networks

EURASIP Journal on Advances in Signal Processing, 2004
We proposed recently a new technique for multiuser detection in CDMA networks, denoted by interference subspace rejection (ISR), and evaluated its performance on the uplink. This paper extends its application to the downlink (DL).
Hansen Henrik, Affes Sofiène, Mermelstein Paul   +2 more
doaj   +1 more source

Iterative Soft Interference Cancellation Aided Minimum Bit Error Rate Uplink Receiver Beamforming

, 2006
Iterative multiuser receivers constitute an effective solution for transmission over Multiple Access Interference (MAI) infested channels, when invoking a combined multiuser detector and channel decoder.
Tan, S., Xu, L., Hanzo, L., Chen, S.
core   +1 more source

Fast Frequency-Hopping Dynamic Multiple-Access for Cognitive Radios: Suboptimum Noncoherent Maximum-Likelihood Multiuser Detection [PDF]

, 2010
We propose a novel dynamic multiple-access (DMA) scheme for application in cognitive radios (CRs). This DMA scheme is implemented by fast frequency hopping with $M$-ary frequency-shift keying (FFH/MFSK) associated with suboptimum noncoherent maximum ...
Shuo Zhang, Zhang, Shuo, Yang, Lie-Liang, Zhang, Youguang, Lie-Liang Yang, Youguang Zhang   +5 more
core   +1 more source

Block-Adaptive Kernel-Based CDMA Multiuser Detector

, 2002
The paper investigates the application of a recently introduced learning technique, called the relevance vector machine (RVM) to construct a block-adaptive kernel-based nonlinear multiuser detector (MUD) for direct-sequence code-division multiple-access (
Hanzo, L., Chen, S.
core   +1 more source

Impact of Carrier Frequency Offsets on Block-IFDMA Systems

EURASIP Journal on Wireless Communications and Networking, 2009
Recently, a new multiple access (MA) scheme called block-interleaved frequency division multiple access (B-IFDMA) is under consideration as an MA scheme candidate for 4G wireless applications.
Simon EP, Dégardin V, Liénard M   +2 more
doaj  

Joint Multiuser Detection and Optimal Spectrum Balancing for Digital Subscriber Lines

EURASIP Journal on Advances in Signal Processing, 2006
In a digital subscriber line (DSL) system with strong crosstalk, the detection and cancellation of interference signals have the potential to improve the overall data rate performance.
Chan Vincent MK, Yu Wei
doaj   +1 more source

Integrated WHT- and DFT-Based Multiuser Massive MIMO System for Secure RIS-Enabled mmWave Communications

IEEE Access
Enhancing signal quality by reducing multiuser interference (MUI), improving system energy efficiency and spectrum efficiency, minimizing interference with adjacent frequency bands, and ensuring secure data communication are critical challenges in the ...
Md. Najmul Hossain, Md. Rakibul Islam, S. K. Tamanna Kamal, Atia Kaniz, Shaikh Enayet Ullah, Tetsuya Shimamura   +5 more
doaj   +1 more source

Subspace-Based Blind and Group-Blind Space-Time Multiuser Detection for the Generalized Multicarrier DS-CDMA Uplink

, 2006
Subspace-based blind and group-blind space-time multiuser detection is invoked for a smart antenna aided generalized MC DS-CDMA system communicating over a dispersive Space-Time (ST) Rayleigh fading channel, where the channel estimates are attained by ...
Yang, L-L., Hanzo, L., Hu, B.
core   +1 more source

Establishing a Spectral Optical CDMA System Involving the Use of Two Mutually Orthogonal States of Polarizations Using 1-D Two-Distinct Codes With Two-Code Keying

IEEE Access
We propose 1-D Two-Distinct codes with two-code keying (TCK) using two mutually orthogonal states of polarization (SOP) in spectral components as a new code family for spectral amplitude coding (SAC) in optical code division multiple access (OCDMA ...
Bih-Chyun Yeh
doaj   +1 more source