Results 241 to 250 of about 10,424,500 (285)
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International Petroleum Technology Conference, 2009
Abstract Due to the complexity and uncertainty associated with most enhanced oil recovery (EOR) processes, a small-scale pilot is often needed to demonstrate the successful application of an EOR process within a specific reservoir prior to wider commercial implementation.
Bhargaw Adibhatla +1 more
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Abstract Due to the complexity and uncertainty associated with most enhanced oil recovery (EOR) processes, a small-scale pilot is often needed to demonstrate the successful application of an EOR process within a specific reservoir prior to wider commercial implementation.
Bhargaw Adibhatla +1 more
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Pilot Design and Optimization for OTFS Modulation
IEEE Wireless Communications Letters, 2021Orthogonal time frequency space (OTFS) modulation has shown its advantages in high-mobility scenarios compared to orthogonal frequency division multiplexing. In this work, we focus on the OTFS pilot design and optimization from the perspective of improving the spectrum efficiency without degrading the channel estimation and symbol detection performance.
Siqiang Wang +4 more
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Pilot design for multi-user MIMO
2009 IEEE International Conference on Acoustics, Speech and Signal Processing, 2009In this paper, challenges regarding the provision of channel state information (CSI) on a multi-user (MU) MIMO-OFDM downlink are addressed. Reference symbols (pilots) support coherent detection at the receiver and enable link adaptation at the transmitter, but add overhead and consume transmit power.
Gunther Auer, Ivan Cosovic
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Blind Pilot Decontamination With Hierarchical Design
IEEE Communications Letters, 2019In massive multiple input multiple output systems, the nonlinear channel estimation method has been initially proved to completely eliminate pilot contamination, which is based on spectrum separation theory to remove interference through projecting it onto the subspace of the desired signal. However, in view of the existing system parameters design for
Hairong Wang, Youhua Fu, Jun Zhang 0023
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Coordinated Pilot Design for Massive MIMO
ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019Pilot contamination is a main limiting factor in multi-cell massive multiple-input multiple-output (MIMO) systems due to the non-orthogonality of pilot sequences which can seriously impair the channel measurement. Recent work has suggested coordinating pilot sequence design across multiple cells by choosing the sequences to minimize the channel ...
Kaiming Shen +2 more
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Optimal pilot interval design for the dedicated pilot channel
2003 IEEE Pacific Rim Conference on Communications Computers and Signal Processing (PACRIM 2003) (Cat. No.03CH37490), 2004Channel estimation plays a critical role in wireless communication systems where it is necessary to acquire channel state to compensate the received user data. For dedicated pilot channel, the known pilot symbols are usually time multiplexed with the user data symbols.
null Jiangbo Dong +2 more
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