نتایج جستجو برای: mimo systems

تعداد نتایج: 1193675  

2009
S. Chen W. Yao L. Hanzo

Multiple-input multiple-output (MIMO) technologies are capable of substantially improving the achievable system’s capacity, coverage and/or quality of service. The system’s ability to approach the MIMO capacity depends heavily on the designs of MIMO receiver and/or transmitter, which are generally expensive optimisation tasks. Hence, researchers and engineers have endeavoured to develop efficie...

2014
Ambuj Mehrish Vikash Kumar Ashish Goswami

Current trends in the development of high-data-rate wireless systems focus on the integration of orthogonal frequencydivision multiplexing (OFDM) and multiple-input?multiple-output (MIMO).The combination of OFDM and the Multiple-InputMultiple-Output (MIMO) technique represents a promising candidate for future broadband wireless systems. This paper addresses the Inter Carrier Interference (ICI) ...

2007
Ye Li K. J. Ray Liu

This paper investigates adaptive blind equalization for multiple-input and multiple-output (MIMO) channels and its application to blind separation of multiple signals received by antenna arrays in communication systems. The performance analysis is presented for the CMA equalizer used in MIMO channels. Our analysis results indicate that double innnite-length MIMO-CMA equalizer can recover one of...

2007
Christian Siegl Robert F.H. Fischer

Multicarrier systems suffer from the high peak-to-average power ratio (PAR) of their transmit signal. In order to overcome this issue, peak-power reduction schemes have been developed. One of the most popular technique is selected mapping (SLM). Recently, a variant of SLM for single-antenna systems was proposed. This scheme considers temporally consecutive OFDM frames to achieve a further gain ...

2012
Pavani Sanghoi Lavish Kansal B. Muquet E. Biglieri A. Goldsmith K. Chen J. de Marca V. Erceg K. V. S. Hari M. S. Smith W. B. Mikhael

WiMAX is basically described as the IEEE 802. 16 standard for Broadband Wireless Access (BWA) that was developed to provide high transmission data rates over larger areas and also to those areas users where broadband coverage is not available. MIMO systems are also of major interest in the field of wireless communication as it allows data to be sent and received over different antennas. WiMAX-M...

2012
Oussama B. Belkacem Mohamed L. Ammari Rafik Zayani Ridha Bouallegue

In order to provide high data rate over wireless channels and improve the system capacity, Multiple-Input Multiple-Output (MIMO) wireless communication systems exploit spatial diversity by using multiple transmit and receive antennas. Moreover, MIMO systems are equipped with High Power Amplifiers (HPA). However, HPA causes nonlinear distortions and affect the receiver’s performance. Since a few...

2015
Himanshu Khanna

Multi Input Multi Output (MIMO) communication is a proven technique to increase the throughput, diversity gain and increase the energy gain by reducing the energy consumption of the wireless network. Space time diversity used in MIMO systems is a technique to mitigate multipath fading. The same information is transmitted over multiple channels that fade independently. So, space time diversity i...

2001
Robert W. Heath Helmut Bölcskei Arogyaswami Paulraj

Wireless systems with multiple transmit and receive antennas (MIMO systems) provide high capacity due to the plurality of modes available in the channel. Previous code designs for MIMO systems have focused primarily on multiplexed signaling for high data rate or diversity signaling for high link reliability. In this paper, based on previous work reported in [1, 2], and using results from frame ...

2010
M. Angeline

MIMO is a technique to increase data rate significantly with multiple antennas at both the transmitter and receiver. MIMO takes the advantage of random fading and multipath delay spread. MIMO systems will need to function reliably in interference limited environment in order to be effective. CDMA systems are designed to operate in an interference free environment and for this reason it is used ...

2009
Andreas Ahrens César Benavente-Peces

Singular-value decomposition (SVD)-based multiple-input multiple-output (MIMO) systems have attracted a lot of attention in the wireless community. However, applying SVD to frequency-selective MIMO channels results in unequally weighted single-input single-output (SISO) channels requiring complex resource allocation techniques for optimizing the channel performance. Therefore, a different appro...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید