Results 51 to 60 of about 23,651 (213)
Decision-aided-based multiple blind PN code estimation algorithm of asynchronous CDMA signal
Tongxin xuebao, 2020 Aiming at the problem of blind estimation of multi-user pseudo-code of multi-path asynchronous code division multiple access (CDMA) signal,using the finite element (FA) characteristic of transmitted symbol,a decision aid (DA) method based on maximum ...
Zhaoyang QIU, Tianyun LI, Xiangming CHEN
doaj +2 more sources
Spreading Code Assignment Strategies for MIMO-CDMA Systems Operating in Frequency-Selective Channels
EURASIP Journal on Wireless Communications and Networking, 2009 Code Division Multiple Access (CDMA) and multiple input multiple output- (MIMO-) CDMA systems suffer from multiple access interference (MAI) which limits the spectral efficiency of these systems.
Claude D'Amours +1 more
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Contribution to Synchronization and Tracking Modelisation in a CDMA Receiver
Journal of Engineering, 2013 We propose and analyze a noncoherent receiver with PN code tracking for direct sequence code division multiple access (DS-CDMA) communication systems. We employ the delay-lock loop (DLL) architectures for the tracking stage.
Aicha Alami Hassani +2 more
doaj +1 more source
DDMA Signal Separation Method Based on Frame‐Interleaved Binary Mask
Electronics Letters, Volume 61, Issue 1, January/December 2025.To solve the problem of multi‐target separation failure at the same distance in empty‐band Doppler division multiple access system, we propose the frame‐interleaved binary mask method. This method can effectively separate multiple targets in above scenario. ABSTRACT Millimetre‐wave multiple‐input multiple‐output (MIMO) radar has many advantages such as
Lu Qian +3 more
wiley +1 more source
Multiple Access Trade Study [PDF]
, 1990 The Personal Access Satellite System (PASS) strawman design uses a hybrid Time Division Multiple Access (TDMA)/Frequency Division Multiple Access (FDMA) implementation.
Motamedi, Masoud
core +1 more source
A new spreading scheme for convolutionally coded CDMA communication in a Rayleigh-fading channel [PDF]
, 1996 There has been increased interest in the use of direct-sequence code-division multiple-access (DS/CDMA) for wireless communication systems. We find that the asymptotic bit-error probability (BEP), P_b, of a convolutionally coded code-division multiple ...
Bang, Young Jo, Kim, Sang Wu
core +1 more source
Enhance Capacity Region of Multi‐Class IIoT Network by Applying Entanglement Assistance Protocol
IET Quantum Communication, Volume 6, Issue 1, January/December 2025.ABSTRACT In the Industrial Internet of Things (IIoT) context, heterogeneous IIoT nodes need diverse performance requirements, including throughput and quality of service (QoS). These IIoT nodes transmit data over a common shared communication medium. The existing critical challenge arises in efficiently scheduling access to this shared medium among a ...
Doaa Subhi, Laszlo Bacsardi
wiley +1 more source
General Signal Model for Multiple-Input Multiple-Output GMTI Radar
Sensors, 2018 Multiple-input multiple-output (MIMO) ground moving target indication (GMTI) radar has been studied recently because of its excellent performance. In this paper, a general signal model is established for the MIMO GMTI radar with both fast-time and slow ...
Fuyou Li +4 more
doaj +1 more source
Information theoretic analysis of LSD scheme [PDF]
, 2011 In this paper, the capacity region of Low Density Signature Multiple Access Channel (LDS-MAC) is calculated through information theoretic analysis. LDS Code Division Multiple Access (LDS-CDMA) uses spreading sequences of low density for spreading the ...
Hoshyar, R. +3 more
core +1 more source
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.In future battlefield scenarios, the existing secondary radar systems are confronted with the problem of excessive platform density. This paper explores integrating CDMA technology with the ALOHA algorithm to increase the target identification probability and shorten the target identification time.
Haonan Chen, Rui Guo, Zengping Chen
wiley +1 more source