Results 61 to 70 of about 3,263 (149)
Extremely low frequency based communication link [PDF]
, 2009 The paper discusses the literature review and the possibility of using the ground itself as transmission medium for various users’ transceivers and an administrator transceiver using Multi-Carrier-Direct Sequence-Code Division Multiple Access (MC-DS-CDMA)
Alaiwi, A +3 more
core
Efficient MC-DS-CDMA transmitter for ICI self-mitigation
Electronics Letters, 2006 A multicarrier direct sequence code division multiple access (MC-DS-CDMA) transmitter that takes advantage of the properties of the CDMA codes to minimise intercarrier interference (ICI) is presented. The proposed system does not add significant complexity to the conventional MC-DS-CDMA system and improves overall performance without lowering the ...
I. Barbancho +2 more
openaire +1 more source
Analytical BER Performance of DS-CDMA Ad Hoc Networks using Large Area Synchronized Spreading Codes
, 2005 The family of operational CDMA systems is interference-limited owing to the Inter Symbol Interference (ISI) and the Multiple Access Interference (MAI) encountered.
Hanzo, L., Hua, W., Liu, X.
core +1 more source
Slow Frequency Hopping Assisted MC DS-CDMA using Large Area Synchronised Spreading Sequences
, 2005 The family of Multi-Carrier Direct-Sequence CDMA (MC DS- CDMA) systems exhibits numerous attractive properties, which render them attractive candidates for next-generation wireless communications.
Hanzo, L., Wei, H, Yang, L-L.
core
Multifunctional MIMO systems: A combined diversity and multiplexing design perspective
, 2010 In this treatise we investigate the design alternatives of different multiple-input multiple-output schemes while considering the attainable diversity gains, multiplexing gains, and beamforming gains.
El Hajjar, Mohammed, Hanzo, Lajos
core +1 more source
SGD Frequency-Domain Space-Frequency Semiblind Multiuser Receiver with an Adaptive Optimal Mixing Parameter [PDF]
, 2013 A novel stochastic gradient descent frequency-domain (FD) space-frequency (SF) semiblind multiuser receiver with an adaptive optimal mixing parameter is proposed to improve performance of FD semiblind multiuser receivers with a fixed mixing parameters ...
Phrompichai, S.
core +1 more source
Blind user detection in doubly-dispersive DS/CDMA channels
, 2009 In this work, we consider the problem of detecting the presence of a new user in a direct-sequence/code-division-multiple-access (DS/CDMA) system with a doubly-dispersive fading channel, and we propose a novel blind detection strategy which only requires
Buzzi, Stefano +3 more
core +1 more source
, 2013 —Successive-relaying-aided (SR) cooperative multi-carrier (MC) space–time shift keying (STSK) is proposed for frequency-selective channels. We invoke SR to mitigate the typical 50% throughput loss of conventional half-duplex relaying schemes and MC code ...
Chen, Sheng +3 more
core +2 more sources
MIMO-aided near-capacity turbo transceivers: taxonomy and performance versus complexity
, 2012 In this treatise, we firstly review the associated Multiple-Input Multiple-Output (MIMO) system theory and review the family of hard-decision and soft-decision based detection algorithms in the context of Spatial Division Multiplexing (SDM) systems.
Chen, Sheng +2 more
core +1 more source
Exact BER Performance of Asynchronous MC-DS-CDMA over Fading Channels
, 2010 In this contribution an accurate average Bit Error Rate (BER) formula is derived for MC-DS-CDMA in the context of asynchronous transmissions and random spreading sequences. We consider a flat Nakagami-m fading channel for each subcarrier. Our analysis is
Affes, Sofiene +2 more
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