Results 61 to 70 of about 23,563 (255)

Enhanced performance of secondary surveillance radar system in dense UAV environments using CDMA techniques

open access: yesIET 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

Reconfigurable Signal Processing and Hardware Architecture for Broadband Wireless Communications

open access: yesEURASIP Journal on Wireless Communications and Networking, 2005
This paper proposes a broadband wireless transceiver which can be reconfigured to any type of cyclic-prefix (CP) -based communication systems, including orthogonal frequency-division multiplexing (OFDM), single-carrier cyclic-prefix (SCCP) system ...
Liang Ying-Chang   +3 more
doaj   +2 more sources

Distributed arbitration scheme for on‐chip CDMA bus with dynamic codeword assignment

open access: yesETRI Journal, 2020
Several code‐division multiple access (CDMA)‐based interconnect schemes have been recently proposed as alternatives to the conventional time‐division multiplexing bus in multicore systems‐on‐chip.
Tatjana R. Nikolic   +2 more
doaj   +1 more source

Efficient Bayesian Inference for Learning in the Ising Linear Perceptron and Signal Detection in CDMA [PDF]

open access: yes, 2005
Efficient new Bayesian inference technique is employed for studying critical properties of the Ising linear perceptron and for signal detection in Code Division Multiple Access (CDMA).
David Saad   +14 more
core   +2 more sources

A Novel Hybrid Path Loss Prediction Model for 5G Midband Networks Using Empirical, Machine Learning, and Feature Prioritization Techniques

open access: yesInternational Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.
Accurate path loss prediction is vital for 5G deployment, especially at midband frequencies where signal degradation is significant. This paper presents a hybrid model that integrates an optimized COST‐231 Hata model with a random forest algorithm to improve prediction accuracy at 3.5 GHz.
Farouq E. Shaibu   +6 more
wiley   +1 more source

Performance of a linear interference canceller for a ds/cdma synchronous system based on the ekf delay estimator [PDF]

open access: yes, 1995
Since the conventional detector often fails to produce reliable decisions for a CDMA channel, several new multiuser detectors have previously proposed.
Agustí Comes, Ramon   +1 more
core   +1 more source

Internet of Things in Healthcare Research: Trends, Innovations, Security Considerations, Challenges and Future Strategy

open access: yesInternational Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
The Internet of Things (IoT) has become a transformative force across various sectors, including healthcare, offering new opportunities for automation and enhanced service delivery. The evolving architecture of the IoT presents significant challenges in establishing a comprehensive cyber‐physical framework. This paper reviews recent advancements in IoT‐
Attiq Ur Rehman   +11 more
wiley   +1 more source

Multiple access based on three-stage modulation in multi-band OFDM-UWB system

open access: yesTongxin xuebao, 2007
According to the characteristics of multi-band orthogonal frequency-division multiplexing ultra-wideband(OFDM-UWB) system,a multiple access based on three-stage modulation(TSM-MA) was proposed.It combined multi-carrier code division multiple access(MC ...
BAO Zhi-hua   +3 more
doaj   +2 more sources

Multiuser Detection Assisted Time- and Frequency-Domain Spread Multicarrier Code-Division Multiple-Access

open access: yes, 2006
In this contribution, we study a reduced-complexity multiuser detection aided multicarrier direct-sequence code-division multiple-access (MC DS-CDMA) scheme, which employs both time (T)-domain and frequency (F)-domain spreading.
Hanzo, L., Wei, H., Yang, L-L.
core   +1 more source

Cdma blind channel equalization: a weighted subsface a proach [PDF]

open access: yes, 1999
This paper considers the problem of blind demodulation of multiuser information symbols in a direct-sequence code-division multiple access (DS-CDMA) environment. Channel estimation and symbol detection in the presence of both multiple access interference
Cabrera-Bean, Margarita   +1 more
core   +1 more source

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