Results 11 to 20 of about 16,273 (157)

Waveform Optimization of Compressed Sensing Radar without Signal Recovery

open access: yesInformation, 2019
Radar signal processing mainly focuses on target detection, classification, estimation, filtering, and so on. Compressed sensing radar (CSR) technology can potentially provide additional tools to simultaneously reduce computational complexity and ...
Quanhui Wang, Ying Sun
doaj   +1 more source

Performance analysis of beamformers using generalized loading of the covariance matrix in the presence of random steering vector errors [PDF]

open access: yes, 2005
Robust adaptive beamforming is a key issue in array applications where there exist uncertainties about the steering vector of interest. Diagonal loading is one of the most popular techniques to improve robustness.
Besson, Olivier, Vincent, François
core   +1 more source

Analytical characterisation of the terahertz in-vivo nano-network in the presence of interference based on TS-OOK communication scheme [PDF]

open access: yes, 2017
The envisioned dense nano-network inside the human body at terahertz (THz) frequency suffers a communication performance degradation among nano-devices.
Abbasi, Qammer H.   +4 more
core   +1 more source

Performance of ZF Linear Equalizers for Single Carrier Massive MIMO Uplink Systems

open access: yesIEEE Access, 2018
In this paper, we investigate the performance of the spatial-temporal zero-forcing linear equalizer architectures for a single-carrier Massive MIMO uplink system under frequency-selective fading environment.
Ting Li, Murat Torlak
doaj   +1 more source

Exploiting Regional Differences: A Spatially Adaptive Random Access [PDF]

open access: yes, 2015
In this paper, we discuss the potential for improvement of the simple random access scheme by utilizing local information such as the received signal-to-interference-plus-noise-ratio (SINR).
Kim, Dong Min, Kim, Seong-Lyun
core   +1 more source

Data Detection and Code Channel Allocation for Frequency-Domain Spread ACO-OFDM Systems Over Indoor Diffuse Wireless Channels [PDF]

open access: yes, 2014
Future optical wireless communication systems promise to provide high-speed data transmission in indoor diffuse environments. This paper considers frequency-domain spread asymmetrically clipped optical orthogonal frequency-division multiplexing (ACOOFDM)
Chen, Ming   +4 more
core   +1 more source

Joint Sensor Clustering and Power Allocation in Wireless Body Area Networks Based on NOMA. [PDF]

open access: yesHealthc Technol Lett
This paper addresses an optimization problem for the NOMA assisted wireless body area networks. A joint sensor clustering and power allocation algorithm is proposed to maximize the system sum throughput. ABSTRACT With the transformation of modern medical care towards a prevention‐centred model and the growing demand for high‐density sensor deployments ...
Deng D, Liu D, Li J.
europepmc   +2 more sources

An Improved Sub-Array Adaptive Beamforming Technique Based on Multiple Sources of Errors

open access: yesJournal of Marine Science and Engineering, 2020
In this paper, a new robust adaptive beamforming method is proposed in order to improve the robustness against steering vector (SV) mismatches that arise from multiple types of array errors.
Zhuang Xie   +3 more
doaj   +1 more source

Uplink Linear Receivers for Multi-cell Multiuser MIMO with Pilot Contamination: Large System Analysis [PDF]

open access: yes, 2014
Base stations with a large number of transmit antennas have the potential to serve a large number of users at high rates. However, the receiver processing in the uplink relies on channel estimates which are known to suffer from pilot interference.
Krishnan, Narayanan   +2 more
core   +1 more source

Analysis of the performance of adaptive arrays with autual coupling compensation

open access: yesTongxin xuebao, 2007
The performance of adaptive arrays with mutual coupling compensation was analyzed in detail.It was indicated that the adaptive array was able to suppress interference thoroughly.The output power of noise,however,was influenced by the direction of beam ...
LI Rong-feng 1   +3 more
doaj   +2 more sources

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