Results 221 to 230 of about 536,041 (263)
Some of the next articles are maybe not open access.
Full dimension mimo (FD-MIMO): the next evolution of MIMO in LTE systems
IEEE Wireless Communications, 2014Full dimension MIMO has attracted significant attention in the wireless industry and academia in the past few years as a candidate technology for the next generation evolution toward beyond fourth generation and fifth generation cellular systems. FD-MIMO utilizes a large number of antennas placed in a 2D antenna array panel for realizing spatially ...
Younsun Kim +7 more
openaire +1 more source
5G Enabling Technologies - MIMO, Multiuser MIMO, and Massive MIMO Slides
2017In this webinar, the fundamentals underlying the MIMO concept are explained. It will be shown how multiple reflections in indoor and urban environments can be effectively used to create additional independent channels that can serve the purposes of diversity and/or spatial multiplexing.
openaire +1 more source
Broadband MIMO antennas for MIMO radar systems
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013Methods of reducing both electric and magnetic field coupling for enhancing the isolation in broadband MIMO antenna system is presented. The proposed MIMO antenna consists of two coplanar waveguide (CPW) fed self-complementary antennas (SCAs) and a U-shaped slot is etched on the ground plane.
Chan-Chieh Lin +2 more
openaire +1 more source
BER-Allocation in MIMO and MIMO-OFDM
2006 IEEE International Symposium on Information Theory, 2006Adaptive bit loading algorithms are proposed for MIMO and MIMO-OFDM systems, thus better exploiting space and frequency diversity. Constant power allocation is assumed over all subchannels while the bit error rate is unconstrained. An efficient bit loading algorithm, which maximizes system bit rate under target mean BER restriction is formulated for a ...
Erez Wineberger, Ofer Amrani
openaire +1 more source
ASTC-MIMO to ASTC-MIMO-OFDM System
2015In the first part of this chapter, we propose to analyze the capacity of a MIMO-OFDM system using the ASTC codes in Rayleigh frequency selective-channels.
Bannour Ahmed, Mohammad Abdul Matin
openaire +1 more source
Overlapped-MIMO Radar and MIMO Cellular System
2017In this chapter, we explore a collocated overlapped multiple-input multiple-output (Overlapped-MIMO) radar waveform design, which is combined with an algorithm to share spectrum through null space projection (NSP) for the coexistence of radar and communications system.
Awais Khawar +2 more
openaire +1 more source
Switching between MIMO‐TDMA and MIMO‐CDMA
Transactions on Emerging Telecommunications Technologies, 2012AbstractThe throughput analyses for MIMO‐TDMA (multiple‐input multiple‐output with time division multiple access) and MIMO‐CDMA (multiple‐input multiple‐output with code division multiple access) are performed. These analyses show that there is a crossover in the throughput for MIMO‐TDMA and MIMO‐CDMA.
openaire +1 more source
User-Centric Cell-Free Massive MIMO Networks: A Survey of Opportunities, Challenges and Solutions
IEEE Communications Surveys and Tutorials, 2022Hussein A Ammar +2 more
exaly