نتایج جستجو برای: mimo system

تعداد نتایج: 2242620  

2015
Jaskirat Kaur Harmandar Kaur H. A. Suraweera C. Chai J. Shentu

The Multiple-Input Multiple-Output (MIMO) – Orthogonal Frequency Division Multiplexing (OFDM) technology significantly provides high transmission rate and robustness against multi-path fading and other channel impairments. Mostly, MIMO-OFDM system is analyzed only in presence of additive white Gaussian noise (AWGN) only, but in practice, in many actual wireless environments impulsive characteri...

2008
O. Weikert

A multiple-input multiple-output (MIMO) wireless transmission system with continuous phase modulation (CPM) is considered. A novel MIMO CPM receiver with incoherent modulation is presented. The incoherent demodulation of CPM allows an uncomplicated handling of a frequency offset compared to coherent approaches requiring exact knowledge of the carrier frequency. Blind signal separation (BSS) is ...

2013
Priya Sharma Vijay Prakash Singh

In this paper we are proposing a method which evaluate the performance of V-BLAST MIMO system in different consideration of rayleigh fading enviorement to get better performance of the system. In VBLAST MIMO system some of linear detection technique can be used for interference cancellation .Here we are using MMSE-IC for the same.Our proposed system give better error rate performance with the u...

2015
Giligittha Swetha

In wireless communication system, MIMO-OFDM has been proposed as an efficient technique for providing high date rates, low power consuming and very efficient in 3G and 4G technologies. MultipleInput Multiple-Output (MIMO) & Orthogonal Frequency-Division Multiplexing (OFDM) systems have a assuring ability to increase the capacity and performance with acceptable Bit Error Rate (BER) proportionall...

2013
Archana Ogale Shubhangi Chaudhary Anil J Patil

Multiple Transmit and receive antenna are now popularly used to form multiple input, multiple output (MIMO) channels to increase the capacity as well as to reduce the Bit Error Rate (BER). This paper describes the performance of Hybrid MIMO-OFDM (Orthogonal Frequency Division Multiplexing) models, which are developed & analyzed in Matlab ® Simulink. In this study 2×2 STBC-OFDM and 2×2 SM-OFDM s...

Journal: :EURASIP J. Adv. Sig. Proc. 2011
Fernando H. Gregorio Juan E. Cousseau Stefan Werner Taneli Riihonen Risto Wichman

The design of predistortion techniques for broadband multiple input multiple output-OFDM (MIMO-OFDM) systems raises several implementation challenges. First, the large bandwidth of the OFDM signal requires the introduction of memory effects in the PD model. In addition, it is usual to consider an imbalanced in-phase and quadrature (IQ) modulator to translate the predistorted baseband signal to ...

2007
Kwang Soon Lee Wangyun Won

Properties and potential applications of the block pulse response circulant matrix (PRCM) and its singular value decomposition (SVD) are investigated in relation to MIMO control and identification. The SVD of the PRCM is found to provide complete directional as well as frequency decomposition of a MIMO system in a real matrix form. Three examples were considered: design of MIMO FIR controller, ...

Journal: :JCM 2011
Li-Chun Wang Chu-Jung Yeh

In this paper, we present the closed-form expressions for the link outage and coverage of the zeroforcing beamforming (ZFB) and zero-forcing dirtypaper coding (ZF-DPC) multiuser multi-input multioutput (MIMO) broadcast systems. We find that the ZF-DPCMIMO broadcast system has a larger diversity order and better coverage compared with the ZFB MIMO broadcast system. Furthermore, it is observed th...

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...

Journal: :EURASIP J. Wireless Comm. and Networking 2009
Martin Wrulich Markus Rupp

Multiple-input multiple-output (MIMO) techniques are regarded as the crucial enhancement of todays wireless access technologies to allow for a significant increase in spectral efficiency. After intensive research on single link performance, the third Generation Partnership Project (3GPP) integrated a spatial multiplexing scheme as MIMO extension of High-Speed Downlink Packet Access (HSDPA). Des...

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