System Level Performance of Downlink MU-MIMO Transmission for 3GPP LTE-Advanced

Kusume, Katsutoshi; Dietl, Guido; Abe, Toshinori; Taoka, Hidekazu; Nagata, Satoshi

doi:10.1109/vetecs.2010.5493979

Cited by 35 publications

(14 citation statements)

References 11 publications

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“…MU-MIMO can increase the network capacity, which is not achievable in SU-MIMO systems [52]. Many studies on different aspects of LTE-Advanced MU-MIMO such as performance evaluation [53][54][55][56][57][58][59], interference and channel estimation [60][61][62], feedback and signalling design and improvement [63][64][65][66], scheduling [67][68][69], beamforming [70,71], techniques to improve the throughput [72], and its deployment alongside other LTE-Advanced features such as CA [73,74] and CoMP [75] have been done.…”

Section: Overviewmentioning

confidence: 99%

LTE-Advanced Radio Access Enhancements: A Survey

Dehghani

Arshad

MacKenzie

2014

Wireless Pers Commun

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Long Term Evolution Advanced (LTE-Advanced) is the next step in LTE evolution and allows operators to improve network performance and service capabilities through smooth deployment of new techniques and technologies. LTE-Advanced uses some new features on top of the existing LTE standards to provide better user experience and higher throughputs. Some of the most significant features introduced in LTE-Advanced are carrier aggregation, enhancements in heterogeneous networks, coordinated multipoint transmission and reception, enhanced Multiple Input Multiple Output (MIMO) usage and deployment of relay nodes in the radio network. Mentioned features are mainly aimed to enhance the radio access part of the cellular networks. This survey article presents an overview of the key radio access features and functionalities of the LTE-Advanced radio access network, supported by the simulation results. We also provide a detailed review of the literature together with a very rich list of the references for each of the features. An LTE-Advanced roadmap and the latest updates and trends in LTE markets are also presented.

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Section: Overviewmentioning

confidence: 99%

LTE-Advanced Radio Access Enhancements: A Survey

Dehghani

Arshad

MacKenzie

2014

Wireless Pers Commun

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“…For closed-loop MIMO operation, users report their CQI and CDI to their serving BS. Assuming that the CDI is encoded using a B-bit codebook [12], the channel can be represented asĥ…”

Section: System Modelmentioning

confidence: 99%

Opportunistic feedback of channel information in multi-user MIMO environments

Park

Byun

Yoon

et al. 2013

2013 IEEE Wireless Communications and Networking Conference (WCNC)

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In this paper, we consider opportunistic feedback of channel state information (CSI) for multi-user multi-antenna transmission. The base station utilizes channel quality information (CQI) as the CSI for closed-loop multi-antenna transmission, which is often achieved from mobile stations in a quantized format. However, only the use of quantized CQI may noticeably deteriorate the transmission performance. We first analyze the effect of CSI quantization error on the multi-user beamforming performance. Then, we propose a novel scheme for opportunistic CSI feedback and user scheduling in multi-user multi-antenna transmission environments. Simulation results show that the proposed scheme can improve the spectral efficiency using a small amount of CSI feedback signaling overhead.

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“…In this paper, we focus on MIMO interference channels [8][9][10][11][12][13][14]. Since each user transmits at the same time, how to deal with the co-channel interference is an interesting question.…”

Section: Introductionmentioning

confidence: 99%