Results 91 to 100 of about 20,358 (233)

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  

Peer to Peer Transmission of Data using Versatchat Approach [PDF]

ITM Web of Conferences
World is moving online physical transportation of information from place to place and person to person communication is becoming an important thing and Information transfer through fibre optical cables connecting continents and countries.
Swamy C Manjunatha, S Senthilnathan, S Shivananda, Elappila Manu, Kumar C Naveen, T Vigneshwaran   +5 more
doaj   +1 more source

Analysis and Design of Channel Estimation in Multicell Multiuser MIMO OFDM Systems [PDF]

, 2014
This paper investigates the uplink transmission in multicell multiuser multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems. The system model considers imperfect channel estimation, pilot contamination (PC), and
Xu, Peng, Qi, Feng, Wang, Jinkuan, Wang, Jiangzhou   +3 more
core   +1 more source

Time-Collaborative Constellation Design With Finite-Alphabet Inputs for Two-User Multi-Access Visible Light Communications

IEEE Photonics Journal, 2019
Ubiquitous light-emitting diodes provide natural infrastructures for multiuser visible light communications (VLCs). However, the current available works for multiuser VLC systems mainly focus on broadcast scenarios and beamforming techniques.
Zhen-Yu Wang, Hong-Yi Yu, Da-Ming Wang
doaj   +1 more source

Time- and Frequency-Domain-Spread Generalized Multicarrier DS-CDMA Using Subspace-Based Blind and Group-Blind Space–Time Multiuser Detection

, 2008
—Subspace-based blind and group-blind space–time (ST) multiuser detection (MUD) is invoked for a smart-antenna-aided gen-eralized multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) system communicating over a dispersive ST Rayleigh ...
Lie-liang Yang, Yang, Lie-Liang, Hu, Bin, Hanzo, Lajos, Lajos Hanzo, Bin Hu   +5 more
core  

Generalised MBER-based vector precoding design for multiuser transmission

, 2011
We propose a generalized vector precoding (VP) design based on the minimum bit error rate (MBER) criterion for multiuser transmission in the downlink of a multiuser system, where the base station (BS) equipped with multiple transmitting antennas ...
Chen, Sheng, Hanzo, Lajos, Yao, Wang
core  

Iterative Decoding and Soft Interference Cancellation in Fast Frequency Hopping Multiuser System Using Clipped Combining

, 2007
Iterative decoding (ID) aided fast frequency hopping (FFH), M-ary frequency shift keying (MFSK) using clipped combining in multiple access (MA) channels is investigated. All users’ data are convolutionally encoded and the encoded bits are interleaved and
Ng, S.X., Ahmed, S., Lie-Liang Yang, Soon Xin Ng, Yang, L.L., Hanzo, L., Lajos Hanzo, Sohail Ahmed   +7 more
core   +1 more source

Asymptotic Performance Analysis of Time-Frequency-Domain Spread MC DS-CDMA Systems Employing MMSE Multiuser Detection [PDF]

, 2010
In this contribution the asymptotic signal-to-interference-plus-noise ratio (SINR) performance of multicarrier direct-sequence code-division multiple-access systems employing time-frequency-domain spreading, i.e., of the TF/MC DS-CDMA systems, is studied,
Zhang, Youguang, Yang, Lie-Liang, Lie-Liang Yang, Peng Pan, Youguang Zhang, Pan, Peng   +5 more
core   +1 more source

Particle Swarm Optimisation Aided MIMO Multiuser Transmission Designs

, 2012
Bio-inspired computational methods have found wide-ranging applications in signal processing and other walks of engineering. The main attraction of adopting bio-inspired computational intelligence algorithms is that they may facilitate global or near ...
W. Yao, S. Chen, Chen, Sheng, L. Hanzo, Hanzo, Lajos, Yao, Wang   +5 more
core  

Ant-Colony Based Near-ML Space-Time Multiuser Detection for the STBC Assisted DS-CDMA Uplink

, 2010
In this contribution, a novel Ant Colony Optimization (ACO) based Space-Time (ST) Multiuser Detection (MUD) algorithm was proposed in order to improve the Bit Error Ratio (BER) versus Signal-to-Noise Ratio (SNR) performance achieved by the Space-Time ...
Yang, Lie-Liang, Chong Xu, Lie-Liang Yang, Xu, Chong, Hanzo, Lajos, Lajos Hanzo   +5 more
core   +1 more source