Results 231 to 240 of about 274,920 (291)

Robust high-capacity free-space optical communication using OAM-based structured light and intelligent adaptive signal processing. [PDF]

Sci Rep
Ahmad M, Hayat B, Fang M, Wang C, Xie G, Huang Z.   +5 more
europepmc   +1 more source

Distinct motors, shared mechanics: unifying principles of microbial gliding. [PDF]

J Bacteriol
Sen S, Henderson EC, Garcia-Pichel F, Kaplan M, Shrivastava A.   +4 more
europepmc   +1 more source

Bacterial communities in Thai ticks: revealing geographical and methodological gaps in surveillance-a 25-year scoping review. [PDF]

Trop Med Health
Rungrojn A, Chaisiri K, Thaipadungpanit J, Batty EM, Blacksell SD.   +4 more
europepmc   +1 more source

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Coded OFDM-IM With Transmit Diversity

IEEE Transactions on Communications, 2017
In this paper, we propose a simple transmit diversity scheme for orthogonal frequency division multiplexing (OFDM) with index modulation (IM) in order to achieve a diversity gain for index detection, which can significantly improve the performance of OFDM-IM at the cost of the spectral efficiency.
Jinho Choi
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Transmit diversity in 3G CDMA systems

IEEE Communications Magazine, 2002
Transmit diversity (TD) is one of the key contributing technologies to defining the ITU endorsed 3G systems W-CDMA and cdma2000. Spatial diversity is introduced into the signal by transmitting through multiple antennas. The antennas are spaced far enough apart that the signals emanating from them can be assumed to undergo independent fading.
R. Thomas Derryberry, Steven D. Gray, Dumitru Mihai Ionescu, Giridhar D. Mandyam, Balaji Raghothaman   +4 more
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Cooperative transmit diversity based on superposition modulation

IEEE Communications Letters, 2005
We propose a new strategy for cooperative transmit diversity based on superposition modulation and multiuser detection. The new scheme can outperform "classical" cooperative diversity based on decode-and-forward by about 1.5-2 dB in the SNR range of interest and at the same computational complexity.
Erik G. Larsson, Branimir R. Vojcic
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A simple transmit diversity technique for wireless communications

IEEE Journal on Selected Areas in Communications, 1998
This paper presents a simple two-branch transmit diversity scheme. Using two transmit antennas and one receive antenna the scheme provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas.
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Transmit Diversity in the WCDMA System

International Journal of Wireless Information Networks, 1999
This document presents the transmit diversityconcept adopted for the FDD mode of the thirdgenerationWCDMA system in ETSI in 1998. The open-loop mode isbased on the space-time block code attaining full diversity order with two transmit antennas.Different feedback modes are specified.
Risto Wichman, Ari Hottinen
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