Results 181 to 190 of about 159,611 (219)
Robust Transmission for Massive MIMO Downlink With Imperfect CSI [PDF]
IEEE Transactions on Communications, 2019 14 pages, 9 figures, Accepted by IEEE Transactions on ...
Xin Meng, Xiqi Gao, Chengshan Xiao
exaly +4 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
On the Throughput of Broadcast Channels with Imperfect CSI
2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, 2006In a broadcast channel in which one transmitter provides independent streams of data for n receivers, the amount of channel state information (CSI) at the transmitter can affect the capacity region dramatically. Having the accurate SNR of all users at the transmitter, the opportunistic strategy can be used to maximize the throughput (sum-rate) of the ...
Vakili, Ali, Hassibi, Babak
openaire +2 more sources
Performance Analysis of IA Techniques in the MIMO IBC With Imperfect CSI [PDF]
IEEE Transactions on Communications, 2015 In this work we consider the multiple-input multiple-output (MIMO) interference broadcast channel (IBC) and analyse the performance of interference alignment (IA) under imperfect channel state information (CSI), where the variance of the CSI error ...
Paula Aquilina, Tharmalingam Ratnarajah
exaly +2 more sources
2019
Orthogonal frequency-division multiple access (OFDMA) is a promising multiple-access technique that provides high spectral efficiency for next-generation broadband wireless systems. In the downlink of a cellular OFDMA system, the base station (BS) communicates with users over a set of subcarriers.
Chen Chen, Xiang Cheng
openaire +1 more source
Orthogonal frequency-division multiple access (OFDMA) is a promising multiple-access technique that provides high spectral efficiency for next-generation broadband wireless systems. In the downlink of a cellular OFDMA system, the base station (BS) communicates with users over a set of subcarriers.
Chen Chen, Xiang Cheng
openaire +1 more source
Optimal Buffer-Aided Relaying with Imperfect CSI
IEEE Communications Letters, 2016In this letter, we consider a two-hop relay channel that consists of a source, a half-duplex decode-and-forward relay, and a destination. We derive the optimal buffer-aided relaying policy based on imperfect channel state information (CSI) and under long-term per-node power constraints for the source and the relay.
Vahid Jamali +3 more
openaire +1 more source
Robust Resource Allocation for Vehicular Communications With Imperfect CSI
IEEE Transactions on Wireless Communications, 2021The resource allocation in vehicle-to-everything (V2X) communications face a great challenge for satisfying the heterogeneous quality of service (QoS) requirements of the ultra-reliable safety-related services and the minimum throughput required entertainment services, due to the channel uncertainties caused by high mobility.
Weihua Wu +3 more
openaire +1 more source
Linear Precoding Based on the Imperfect CSI Without Knowing the CSI Reliability
The Journal of Korean Institute of Communications and Information Sciences, 2015 We propose a linear precoding scheme combining the merits of beamforming and orthogonal space-time block coding based on the imperfect CSI without knowing the CSI reliability. We first investigate the impact of the CSI reliability on precoding performance by assuming various values of the CSI reliability. Then, we propose a method of predicting the CSI
Woong Lee, Eunchul Yoon
exaly +3 more sources
MMSE Interference Alignment with Imperfect CSI
2012 Second International Conference on Instrumentation, Measurement, Computer, Communication and Control, 2012Interference alignment (IA) is a multi-user wireless communication strategy that enables several transmitters simultaneous communicate with their paired receivers without interfering each other. IA is a multiplexing gain optimal strategy at the expense of requiring the global channel state information (CSI) at the transmitters.
Qingzhong Li, Xuemai Gu, Hanqing Li
openaire +1 more source
Secrecy in MIMOME wiretap channels: Beamforming with imperfect CSI
2014 IEEE International Conference on Communications (ICC), 2014We propose two beamforming schemes supporting multi-stream transmission in multi-input multi-output multi-antenna eavesdropper wiretap channels with imperfect channel state information of the eavesdropper. We first propose a generalized eigenvalue decomposition (GEVD)-based beamforming scheme by designing the beamforming matrix and determining the ...
Chenxi Liu 0002 +4 more
openaire +1 more source
Downlink distributed beamforming through relays with imperfect CSI
2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, 2011Future wireless systems face challenges in supporting high-rate multimedia streaming with wide coverage area and at low power. In this paper we study cooperative MIMO systems in the context of imperfect channel estimation with per-user quality-of-service constraints with the objective of minimizing the sum transmission power at the source and relays ...
Yi Zheng, Steven D. Blostein
openaire +1 more source