Results 101 to 110 of about 20,804 (217)

Multiuser MIMO-OFDM for Next-Generation Wireless Systems

, 2007
This overview portrays the 40-year evolution of orthogonal frequency division multiplexing (OFDM) research. The amelioration of powerful multicarrier OFDM arrangements with multiple-input multiple-output (MIMO) systems has numerous benefits, which are ...
Jiang, M, Ming Jiang, Hanzo, L, Lajos Hanzo   +3 more
core   +1 more source

A 4-port flexible MIMO antenna with isolation enhancement for wireless IoT applications

Heliyon
This paper presents a conformal, miniaturized, and geometrically simple monopole antenna designed for Vehicle–to–Everything (V2X) communications. The antenna consists of a flexible substrate, radiating patch, ground, and metallic stubs.
Uktam Fakhriddinovich Azimov, Anees Abbas, Seong-Wook Park, Niamat Hussain, Nam Kim   +4 more
doaj   +1 more source

Wideband analysis of indoor MIMO channels

, 2002
The application of MIMO communication systems in real environments will invariably require systems to operate over wideband channels. Although suitable techniques for processing wideband MIMO channels have been reported, their evaluation has mainly been ...
McNamara, DP, Fletcher, PN, Beach, MA
core  

MIMO-SAR and the Orthogonality Confusion

, 2012
This paper reviews radar architectures that employ multiple transmit and multiple receive channels to improve the performance of synthetic aperture radar (SAR) systems.
A. Patyuchenko, Laskowski, Piotr, M. Villano, Bordoni, Federica, A. Moreira, Krieger, Gerhard, J. Kim, Kim, Junghyo, Lopez-Dekker, Paco, Patyuchenko, Anton, F. Bordoni, Huber, Sigurd, S. Huber, Moreira, Alberto, T. Romme, Younis, Marwan, G. Krieger, P. Lopez-Dekker, Villano, Michealangelo, M. Younis, Rommel, Tobias, P. Laskowski   +21 more
core   +1 more source

Semi-blind iterative joint channel estimation and K-best sphere decoding for MIMO

, 2013
An efficient and high-performance semi-blind scheme is proposed for Multiple-Input Multiple-Output (MIMO) systems by iteratively combining channel estimation with K-Best Sphere Decoding (SD).
Messier, G.G., G. G. Messier, Sheng Chen, I. Dey, Chen, Sheng, Magierowski, S., S. Magierowski, Dey, Indrakshi   +7 more
core   +1 more source

Modulation-mode assignment for SVD-assisted and iteratively detected downlink multiuser MIMO transmission schemes

, 2011
In this contribution we jointly optimize the number of multiple-input multiple-output (MIMO) layers and the number of bits per symbol within an iteratively-detected multiuser MIMO downlink (DL) transmission scheme under the constraint of a given fixed ...
Ahrens, Andreas, Benavente Peces, César
core  

Antenna Selection in Spatial Modulation Systems

Novel transmit antenna selection techniques are conceived for Spatial Modulation (SM) systems and their symbol error rate (SER) performance is investigated.
Hari, K. V. S., Rajashekar, Rakshith, Hanzo, Lajos   +2 more
core  

A Compact Multi-Band MIMO Antenna With High Isolation and Low SAR for LTE and Sub-6 GHz Applications

IEEE Access
This study designs a multi-band antenna that covers LTE, WiFi, Sub-6 GHz, and WiFi 6E frequencies, applying it to multi-input multi-output (MIMO) antenna systems in laptops, base stations, and smartphones.
Ming-An Chung, Ming-Chun Hsieh, Chia-Chun Hsu, Chia-Wei Lin   +3 more
doaj   +1 more source

Differential Coherent Code Acquisition in the Multiple Transmit/Receive Antenna Aided DS-CDMA Downlink

, 2006
In this contribution we investigate both differentially coherent and noncoherent code acquisition schemes in the multiple transmit/receive antenna aided DS-CDMA downlink, when communicating over uncorrelated Rayleigh channels.
Won, S-H., Won, S.H., Hanzo, L.
core  

Comparison of MIMO channels from multipath parameter extraction and direct channel measurements

, 2004
This work presents a MIMO throughput performance analysis of dynamic wideband double-directional channel measurements that were recently obtained by the University of Bristol. Identical 16-element uniform circular arrays (UCAs) were employed at both ends
Tan, CM, Pal, A, Beach, MA
core