Search Results - "Qi, Chenhao"

Channel Estimation for 3-D Lens Millimeter Wave Massive MIMO System by Ma, Wenyan, Qi, Chenhao

“…Channel estimation for 3-D lens millimeter wave massive MIMO system is investigated. First, the structure of beamspace channel is analyzed to show that the…”
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Weighted Sum-Rate Maximization for Analog Beamforming and Combining in Millimeter Wave Massive MIMO Communications by Sun, Yuhan, Qi, Chenhao

“…The analog beamforming and analog combining in millimeter-wave (mm-Wave) massive MIMO communications are investigated. Based on a hierarchical codebook, the…”
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A Study of Deterministic Pilot Allocation for Sparse Channel Estimation in OFDM Systems by Qi, Chenhao, Wu, Lenan

“…In this letter, we investigate the deterministic pilot allocation for sparse channel estimation in OFDM systems. Based on the rule of minimizing the coherence…”
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Pilot Design Schemes for Sparse Channel Estimation in OFDM Systems by Chenhao Qi, Guosen Yue, Lenan Wu, Yongming Huang, Nallanathan, Arumugam

“…In this paper, we consider the pilot design based on the mutual incoherence property (MIP) for sparse channel estimation in orthogonal frequency-division…”
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Optimized Pilot Placement for Sparse Channel Estimation in OFDM Systems by Qi, Chenhao, Wu, Lenan

“…Compressed sensing (CS) has recently been applied for pilot-aided sparse channel estimation. However, the design of the pilot placement has not been…”
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Energy-Efficient Transceiver Design for Hybrid Sub-Array Architecture MIMO Systems by He, Shiwen, Qi, Chenhao, Wu, Yongpeng, Huang, Yongming

“…Millimeter-wave (mmWave) communication operated in frequency bands between 30 and 300 GHz has attracted extensive attention due to the potential ability of…”
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Estimation of Extended Targets Based on Compressed Sensing in Cognitive Radar System by Chen, Peng, Qi, Chenhao, Wu, Lenan, Wang, Xianbin

“…In this paper, the ranges and velocities of multiple extended targets are estimated by exploiting the target sparsity in the cognitive radar system. Different…”
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Beam position and beam hopping design for LEO satellite communications by Lyu, Leyi, Qi, Chenhao

“…The numbers of beam positions (BPs) and time slots for beam hopping (BH) dominate the latency of LEO satellite communications. Aiming at minimizing the number…”
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Pilot Design for Sparse Channel Estimation in OFDM-Based Cognitive Radio Systems by Chenhao Qi, Guosen Yue, Lenan Wu, Nallanathan, A.

“…In this correspondence, sparse channel estimation is first introduced in orthogonal frequency-division multiplexing (OFDM)-based cognitive radio systems. Based…”
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Two-Level Transmission Scheme for Cache-Enabled Fog Radio Access Networks by Shiwen He, Chenhao Qi, Yongming Huang, Qi Hou, Nallanathan, Arumugam

“…In this paper, we investigate the downlink transmission for cache-enabled fog radio access networks aiming at maximizing the delivery rate under the…”
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Near-Optimal Signal Detector Based on Structured Compressive Sensing for Massive SM-MIMO by Gao, Zhen, Dai, Linglong, Qi, Chenhao, Yuen, Chau, Wang, Zhaocheng

“…Massive spatial-modulation multiple-input multiple-output (SM-MIMO) with high spectrum efficiency and energy efficiency has recently been proposed for future…”
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Research progress and hot spots of hydrothermal liquefaction for bio-oil production based on bibliometric analysis by Yang, Jian, Hong, Chen, Xing, Yi, Zheng, Zixuan, Li, Zaixing, Zhao, Xiumei, Qi, Chenhao

“…Hydrothermal liquefaction (HTL) of biomass used HTL reaction under high temperature and pressure to produce bio-oil. This technology is considered as one of…”
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Joint Design of Pilot Power and Pilot Pattern for Sparse Cognitive Radio Systems by Chenhao Qi, Lenan Wu, Yongming Huang, Nallanathan, A.

“…Existing works design the pilot pattern for sparse channel estimation, assuming that the power of all pilots is equal. However, equal power allocation is not…”
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Intelligent Internet of Things with reliable communication and collaboration technologies by Junhui, Zhao, Celimuge, Wu, Wenjun, Xu, Chenhao, Qi, Shengrong, Bu, Shuowen, Zhang, Qingmiao, Zhang

“…The Internet of Things (IoT) connects objects to Internet through sensor devices, radio frequency identification devices and other information collection and…”
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A Model-Driven Deep Learning Method for LED Nonlinearity Mitigation in OFDM-Based Optical Communications by Miao, Pu, Zhu, Bingcheng, Qi, Chenhao, Jin, Yi, Lin, Chong

“…The nonlinearity of light emitting diodes (LED) has restricted the bit error rate (BER) performance of visible light communications (VLC). In this paper, we…”
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Resource Efficiency: A New Beamforming Design for Multicell Multiuser Systems by He, Shiwen, Huang, Yongming, Lu, Ying, Qi, Chenhao, Yang, Luxi

“…Apart from spectral efficiency (SE), energy efficiency (EE) has become an important metric for future wireless communication systems. However, how to achieve…”
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Sparse channel estimation based on compressed sensing for massive MIMO systems by Chenhao Qi, Yongming Huang, Shi Jin, Lenan Wu

“…The sparse channel estimation which sufficiently exploits the inherent sparsity of wireless channels, is capable of improving the channel estimation…”
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Comments on "On the Combining of the Amplitude and Phase Modulation in the Same Signal by Chenhao Qi, Chenhao Qi, Lenan Wu, Lenan Wu

“…For original paper see Pliatsikas et al. (2005). In the present correspondence, we comment on the proposed phase modulation scheme described in the above…”
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A hybrid compressed sensing algorithm for sparse channel estimation in MIMO OFDM systems by Chenhao Qi, Lenan Wu

“…Due to multipath delay spread and relatively high sampling rate in OFDM systems, the channel estimation is formulated as a sparse recovery problem, where a…”
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Beamspace Channel Estimation for Millimeter Wave Massive MIMO System With Hybrid Precoding and Combining by Ma, Wenyan, Qi, Chenhao

“…In this paper, a framework of beamspace channel estimation in millimeter wave massive MIMO system is proposed. The framework includes the design of hybrid…”
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