Results 1 to 10 of about 122,557 (242)
Carrier Sense Random Packet CDMA Protocol in Dual-Channel Networks [PDF]
Radioengineering, 2015 Code resource wastage is caused by the reason that many hopping frequency (FH) sequences are unused, which occurs under the condition that the number of the actual subnets needed for the tactical network is far smaller than the networking capacity of ...
C. Du +5 more
doaj +4 more sources
ASM Science Journal, 2021 Phase Modulation Orthogonal Frequency Division Multiplexing (PM-OFDM) and Code Division Multiple Access (CDMA) have distinctive advantages. On one hand, PM-OFDM is an attractive technique to combat multipath fading and reduce high PAPR in conventional ...
Jamal Mestoui
doaj +1 more source
Performance Improvement of Multi-UserMC-CDMA system Using Discrete Hartly Transform Mapper [PDF]
Engineering and Technology Journal, 2013 Future wireless communication systems must be able to accommodate a large number of users and simultaneously to provide the high data rates at the required quality of service. In this paper a method is proposed to perform the N-Discrete Hartley Transform
Ali T. Shaheen
doaj +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2023 Introduction. Numerous modern infocommunication systems are based on the spread spectrum technology, i. e., on the use of signals with a large bandwidth-duration product.
V. P. Ipatov
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Implementing of Forward Link Channel CDMA2000-1x System by Using Simulink HDL Coder [PDF]
Engineering and Technology Journal, 2012 This work is a proposed simulation for forward link channel of CDMA2000 -1x system by using QPSK, 8QAM and 16QAM, and converting the proposed system to VHDL language by using Simulink HDL Coder for implementing in FPGA board.
Hadi T. Ziboon, Alaa Y. Eisa
doaj +1 more source
CE-OFDM-CDMA Phase Modulation for 5G System [PDF]
International Journal of Mathematical, Engineering and Management Sciences, 2021 In the present work, we propose a novel modulation scheme for 5G wireless communication system. Our contribution is to combine PM-OFDM (Phase Modulation Orthogonal Frequency Division Multiplexing) and CDMA (Code Division Multiple Access) to exploit their
Jamal Mestoui +4 more
doaj +1 more source
Design and Implementation of MC-CDMA Technique Using FPGA [PDF]
Engineering and Technology Journal, 2013 Multicarrier Code Division Multiple Access (MC-CDMA) is attractive technique for high speed wireless data transmission; it's a combination of Orthogonal Frequency Division Multiplexing (OFDM) and Code Division Multiple Access (CDMA).
il A. H. Hadi, Layla Hattim Abood
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Fine-Grained Power Gating Using an MRAM-CMOS Non-Volatile Flip-Flop
Micromachines, 2019 An area-efficient non-volatile flip flop (NVFF) is proposed. Two minimum-sized Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) and two magnetic tunnel junction (MTJ) devices are added on top of a conventional D flip-flop for temporary storage ...
Jaeyoung Park, Young Uk Yim
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Analysis of Multiple-Access Discrimination Techniques for the Development of a PSD-Based VLP System
Sensors, 2020 There are several technologies and techniques available when developing indoor positioning systems (IPS). Recently, the development of positioning systems based on optical signals has aroused great interest, mainly those using visible light from the ...
Álvaro De-La-Llana-Calvo +5 more
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Performance analysis of an ISMA DS-CDMA packet data network [PDF]
, 1999 The efficiency of MAC protocols for a packet switching DS-CDMA network strongly depends on the offered traffic statistic. For bursty sources where transmission needs are restricted to short message lengths, a protocol such as S-ALOHA can be efficient ...
Agustí Comes, Ramon +2 more
core +1 more source