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   Articles with "uplink massive" as a keyword



Energy-Efficient Joint Power Allocation in Uplink Massive MIMO Cognitive Radio Networks With Imperfect CSI

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recommendations! Published in 2017 at "IEEE Access"

DOI: 10.1109/access.2017.2771399

Abstract: In this paper, a joint pilot and data power allocation problem with max-min fair energy efficiency (EE) guarantee in the uplink massive multiple-input multiple-output cognitive radio networks is investigated. Given the fractional objective function, channel… read more here.

Keywords: power; uplink massive; cognitive radio; allocation ... See more keywords

Semi-Blind Channel-and-Signal Estimation for Uplink Massive MIMO With Channel Sparsity

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recommendations! Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2928092

Abstract: This paper considers the transceiver design for uplink massive multiple-input multiple-output (MIMO) systems with channel sparsity in the angular domain. Recent progress has shown that sparsity-learning-based blind signal detection is able to retrieve the channel… read more here.

Keywords: semi blind; blind channel; uplink massive; channel sparsity ... See more keywords

Energy Efficiency of Uplink Massive MIMO Systems With Successive Interference Cancellation

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recommendations! Published in 2017 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2016.2634558

Abstract: The energy efficiency (EE) of an uplink massive multiple-input multiple-output system depends strongly on the number of antennas at base stations (BSs) and the receiver architecture. The existing research has focused on linear receivers, such… read more here.

Keywords: interference cancellation; successive interference; efficiency uplink; uplink massive ... See more keywords
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An LMMSE-Based Receiver for Uplink Massive MIMO Systems With Randomized IQ Imbalance

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recommendations! Published in 2018 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2018.2836935

Abstract: In-phase/quadrature-phase imbalance (IQI) is one of the hardware impairments in uplink massive multiple-input multiple-output systems. In this context, by modeling the IQI parameters as random variables, this letter first analyzes the statistic property of the… read more here.

Keywords: imbalance; iqi parameters; uplink massive; lmmse based ... See more keywords

Differential 16-QAM and 16-APSK for Uplink Massive MIMO Systems

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recommendations! Published in 2018 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2017.2763143

Abstract: A differential quadrature amplitude modulation (QAM) scheme for uplink massive multiple-input-multiple-output systems was recently proposed; this scheme outperformed the conventional differential amplitude-phase shift keying (APSK) scheme for 1000 receiver antennas. However, the detectors of these… read more here.

Keywords: qam; detector; uplink massive; differential qam ... See more keywords

Power Allocation Schemes for Uplink Massive MIMO System in the Presence of Imperfect CSI

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recommendations! Published in 2020 at "IEEE Transactions on Signal Processing"

DOI: 10.1109/tsp.2020.3029404

Abstract: In this paper, spectrum efficiency (SE) and energy efficiency (EE) performances of uplink massive multiple-input multiple-output (MIMO) systems with continuous-rate adaptive modulation and imperfect channel state information (CSI) are investigated over Rayleigh fading channels. Given… read more here.

Keywords: scheme; problem; uplink massive; power ... See more keywords

Frequency Synchronization for Uplink Massive MIMO Systems

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recommendations! Published in 2018 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2017.2764894

Abstract: In this paper, we propose a frequency synchronization scheme for multiuser orthogonal frequency division multiplexing uplink with a large-scale uniform linear array at base station (BS) by exploiting the angle information of users. Considering that… read more here.

Keywords: synchronization uplink; frequency; frequency synchronization; massive mimo ... See more keywords

Expectation Propagation Aided Signal Detection for Uplink Massive Generalized Spatial Modulation MIMO Systems

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recommendations! Published in 2022 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2021.3108852

Abstract: In this paper, we propose a joint signal detection algorithm under the framework of the expectation propagation (EP) algorithm for uplink massive multiuser multiple-input multiple-output (MIMO) systems with generalized spatial modulation (GSM). By projecting the… read more here.

Keywords: expectation propagation; uplink massive; modulation; signal detection ... See more keywords