Results 11 to 20 of about 30,726 (232)
Spatial Clustering Group Based OFDMA Access Protocol for the Next Generation WLAN [PDF]
Xibei Gongye Daxue Xuebao, 2018 The next generation wireless local area network (WLAN) needs to significantly improve the area throughput in high dense scenario. Orthogonal Frequency Division Multiple Access (OFDMA), considered as the key technology of next generation WLAN, has been ...
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Konsep Transmisi Tidak Koheren menggunakan Differential Unitary Modulation pada OFDMA
Jurnal Elkomika, 2021 ABSTRAK Differential modulation adalah sebuah teknik modulasi yang memungkinkan pengiriman informasi tanpa diperlukannya estimasi kondisi kanal di sisi penerima.
DHONI PUTRA SETIAWAN +2 more
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Xibei Gongye Daxue Xuebao, 2021 Aiming at the problems of low efficiency of buffer information collection and sharp drop of system throughput caused by the aggravation of conflicts in the multi basic service set (BSS) high density deployment overlap coverage scenario of next generation
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Advanced Receiver Design for Quadrature OFDMA Systems
EURASIP Journal on Wireless Communications and Networking, 2009 Quadrature orthogonal frequency division multiple access (Q-OFDMA) systems have been recently proposed to reduce the peak-to-average power ratio (PAPR) and complexity, and improve carrier frequency offset (CFO) robustness and frequency diversity for the ...
Lin Luo +2 more
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Optimal Scheduling for OFDMA Systems [PDF]
2006 Fortieth Asilomar Conference on Signals, Systems and Computers, 2006 We consider a scheduling and resource allocation problem for the downlink of an OFDMA-based wireless network, where the channel estimation error is modeled by a self-noise term in the decoding process. During each time-slot this involves selecting a subset of users for transmission, determining the assignment of available subcarriers to selected users,
Agrawal, Rajeev +3 more
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Novel Predistortion Algorithm for OFDMA [PDF]
VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009 RF amplifier in a wireless communication system is usually non-linear in nature. If such an amplifier is used in OFDMA based systems, it will cause serious degradation. This degradation will be both in terms of the reduction in BER and the generation of out of band noise. In this paper we have worked on the linearization method of the amplifier.
Ali, Saqib +2 more
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Performance analysis of wireless compressed-image transmission over DST-based OFDMA systems
EURASIP Journal on Wireless Communications and Networking, 2023 Multimedia data, like images, consumes significant bandwidth when transmitted over wireless systems. Therefore, compressing transmitted images becomes crucial to reduce the required bandwidth and improve energy efficiency.
Nagi H. Al-Ashwal +3 more
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Multi-group frequency hopping OFDMA based on statistical multiplexing [PDF]
, 2008 In this paper, the multi-group frequency hopping OFDMA (MG-FH OFDMA) based on the statistical multiplexing is proposed for the downlink cellular system. Compared with the existed random frequency hopping OFDMA (RFH-OFDMA) system utilizing the statistical
Gong, Ping +4 more
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Slow Adaptive OFDMA Systems Through Chance Constrained Programming [PDF]
, 2009 Adaptive OFDMA has recently been recognized as a promising technique for providing high spectral efficiency in future broadband wireless systems. The research over the last decade on adaptive OFDMA systems has focused on adapting the allocation of radio ...
Jun, Ying +4 more
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Performance analysis of layered random beamforming OFMDA with feedback reduction [PDF]
, 2007 This paper presents a downlink performance analysis of a Layered Random Beamforming (LRB) - MIMO-OFDMA Physical Layer (PHY) with feedback reduction as applicable to future generation wireless communication systems.
Armour, SMD +4 more
core +3 more sources