نتایج جستجو برای: multi output mimo systems

تعداد نتایج: 1708425  

2010
S. K. Srivatsa

Alomouti’s space-time coding scheme for Multi-Input Multi-Output (MIMO) system has drawn much attention in 4G wireless technologies. Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and enhance the system capacity on time variant ...

2010
M. P. CHITRA

Alamouti’s space-time coding scheme for Multi-Input Multi-Output (MIMO) system has drawn much attention in 4G wireless technologies. Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and enhance the system capacity on time variant ...

2017
Wei Fan Ines Carton Pekka Kyösti Anders Karstensen Tommi Jämsä Mattias Gustafsson Gert F. Pedersen

Massive multiple-input multiple-output (MIMO) is seen as an enabling technology to fulfill dramatic improvements in spectral efficiency for 5G deployment in 2020. For massive MIMO systems, the learning loop from early stage prototype design to final stage performance validation, is expected to be slow and ineffective. There is a strong need to evaluate massive MIMO base station (BS) performance...

2008
Koichi Adachi Fumiyuki Adachi Masao Nakagawa

Multi-carrier code division multiple access (MC-CDMA) is a promising multiple access scheme. An extremely high spectrum efficient transmission technique is required in future wireless communication systems. The use of multiple-input multiple-output (MIMO) space division multiplexing (SDM) is essential to achieve a very high speed data transmission with a limited bandwidth. In this paper, we der...

2015
Qianyan Shen Feng Ding

This paper uses the key-term separation principle and develops a multi-innovation stochastic gradient algorithm for Hammerstein MIMO output error systems. The basic idea is to decompose a Hammerstein MIMO system into two subsystems and to identify the parameters of each subsystem interactively. The parameter estimation accuracy can be improved with the innovation length increasing. The simulati...

2012
AIK-HONG LEE Joseph Bentsman Aik Hong Lee

The simultaneous use of the state and the output of the offline controller in bumpless transfer design for the multi-input-multi-output (MIMO) systems is proposed. Under the large online/offline controller mismatch, the recently introduced MIMO bumpless transfer design based on the feedback of the offline controller state and the online controller input and output is found to produce significan...

2014
Nilesh Kumar Sheilza Jain

This paper presents a method to control height and speed of fixed wing unmanned aerial vehicles (UAVs) using MATLAB platform. The mathematical dynamic model of Six Degrees of Freedom (6-DOF) aircraft is nonlinear and it is linearized about a flight condition. System is divided into two Multi Input Multi Output (MIMO) sub models. First model controls the longitudinal dynamics and second model is...

2014
Mohammad S. Sharawi

Multiple-input-multiple-output (MIMO) technology has become an integral part of wireless systems nowadays. This technology depends on the use of multiple antenna elements at the mobile terminal as well as the base station. The design of compact printed MIMO antenna systems is a challenging task specially when it is made for small factor mobile terminals. The introduction of MIMO brought with it...

2008
SeungHwan Won Lajos Hanzo

In this article, we identify some of the key problems that may be encountered when designing Non-Coherent (NC) Multiple-Input Multiple-Output (MIMO) DownLink (DL) synchronisation schemes for communicating over multi-path fading channels. Our main objectives are to illustrate the information theoretic features and to provide design guidelines for the initial synchronisation of NC MIMO systems. W...

2005
Weinian Zhang Shuzhi Sam Ge Steven G. Krantz

Control system design for non-affine systems is a difficult problem because of the lack of mathematical tools. The key to the problem is solving for an implicit function but the known results for implicit functions are not applicable for higher dimensional systems except for single-input and single-output systems. In this paper, a new version of a global implicit function theorem in higher dime...

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