نتایج جستجو برای: mimo system
تعداد نتایج: 2242620 فیلتر نتایج به سال:
Abstract— In the present scenario, with the growing demand for wireless communication in today’s life, along with the parallel rapid growth of digital communication technology, new innovative ideas are coming into existence which needs to be implemented. The main need of any communication system is , basically high speeds of data transmission with higher accuracy and reliability. (Orthogonal Fr...
In the field of automatic control system design, adaptive inverse is a powerful control technique. It identifies the system model and controls automatically without having prior knowledge about the dynamics of plant. In this paper neural network based adaptive inverse controller is proposed to control a MIMO system. Multi layer perception and back propagation are combinedly used in this investi...
Next-generation communication evolution towards 4G promises to meet the demands for ubiquitous communication. MIMO technology has become a mandatory requirement to achieve the goals of future wireless communication. This paper describes the System design methodology for MIMO Wireless platform. Software simulations provide flexibility, but the true performance of the system can only be known by ...
This paper proposes and analyses an efficient wireless telecommunication system with multiple antennas to the emission and reception MIMO (multiple input multiple output) with space diversity in an OFDM (Orthogonal Frequency Di vision Multiplex). The proposed system consists to add modified Alamouti encoder to the system OFDM to improve the performance of the destination by intimately collabora...
In the present study, a novel compact antenna system for diversity/MIMO application is proposed for WLAN (5.8 GHz) band with good isolation between the two input ports. The novelty of the proposed MIMO antenna system is, though the resonators are physically separated by a distance of 0.029λ (λ is the free space wavelength at 5.8 GHz) equal to the thickness of the substrate (1.524 mm) used for t...
In any communication system like MIMO OFDM system the transmitter and the receiver have to be synchronized to each other in order to make efficient transmission. Orthogonal frequency division multiplexing (OFDM) is a special case of multicarrier transmission, which eliminates ISI and ICI, while MIMO (Multi-Input Multi-Output) system increases the bandwidth due to the propagation of signals usin...
In this paper we estimate the performance of 2*3 MIMO-MC-CDMA system using convolution code in MATLAB which highly reduces BER by increasing the efficiency of system. MIMO and MC-CDMA system combination is used to reduce bit error rate and also for forming a new system called MC-CDMA which is multi user and multiple access schemes used to increase the performance of the system. MC-CDMA system i...
This paper investigates the applicability of multiple-input multiple-output (MIMO) technology to satellite communications at the Ku-band and above. After introducing the possible diversity sources to form a MIMO matrix channel in a satellite environment, particular emphasis is put on satellite diversity. Two specific different topics from the field of MIMO technology applications to satellite c...
The effect of the carrier frequency on the multiple-input multiple-output (MIMO) system eigenvalues is investigated experimentally in an indoor environment considering lineof-sight (LOS) and non-line-of-sight (NLOS) conditions. The results show a reduction of the mean power gain in the MIMO system eigenvalues due to a correlation increment between the spatial subchannels when the carrier freque...
Multi-user multiple input multiple output (MU-MIMO) systems have attracted much attention as a technology that enhances the total system capacity by generating a virtual MIMO channel between a base station and multiple terminal stations. Extensive evaluations are still needed because there are many more system parameters inMU-MIMO than in single user (SU)-MIMO and the MU-MIMO performance in act...
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