Results 51 to 60 of about 9,081 (117)
Code orthogonality for wideband CDMA systems with multiple transmit antennas [PDF]
, 2007 Code orthogonality is a useful indicator in determining the performance of the synchronous downlink of third generation Universal Mobile Telecommunication System (UMTS) Terrestrial Radio Access systems.
Beach, Mark +8 more
core +1 more source
, 2005 The number of transmit antennas that can be employed in the context of least-squares (LS) channel estimation contrived for orthogonal frequency division multiplexing (OFDM) systems employing multiple transmit antennas is limited by the ratio of the ...
M. Munster +3 more
core +1 more source
The Application of Reconfigurable Filtennas in Mobile Satellite Terminals
IEEE Access, 2020 Reconfigurable antennas play an important role in wireless communication systems as the physical and electrical properties of their structures can be modified, allowing them to be used in different applications. In this paper two reconfigurable filtennas
Luis Rodrigues +2 more
doaj +1 more source
Peak-Seeking Controller for Real-Time Mobile Satellite Tracking [PDF]
, 2012 Increasingly tightened restrictions on antenna beam-width force the use of higher performance hardware in gimbaled satellite communication transceivers. The need for more precise hardware is forcing the price of gimbal-mounted satellites antennas higher.
Karol, Robert Frederick
core +1 more source
Application of switchable 4G/5G dual antenna system for laptops
IET Microwaves, Antennas & PropagationThis work investigates a switchable 4G/5G dual‐antenna system designed for laptops. The dual open‐slot antenna structure is straightforward, with a slot width of only 2 mm.
Shao‐Hung Cheng +3 more
doaj +1 more source
3D Beamforming Technologies and Field Trials in 5G Massive MIMO Systems
IEEE Open Journal of Vehicular Technology, 2020 In this paper, three-dimensional (3D) beamforming characteristics and applications in fifth generation (5G) mobile communications have been studied by considering the physical structure of array antennas, and the properties of the 3D beam pattern formed ...
Jiangzhou Wang +7 more
doaj +1 more source
IEEE AccessEach generation of mobile communications introduces new frequency spectrums and new communication systems to increase user’s experienced data rates.
Kin-Lu Wong +3 more
doaj +1 more source
Microsrip Ring Antennas Operating at Higher-Oder Modes for Mobile Communications [PDF]
, 1995 An experimental study of microstrip ring antennas suitable for use in mobile communication systems is presented. Conical radiated beams are generated by the TM(21) and TM(41) modes.
Langley, Richard J., Batchelor, John C.
core +1 more source
Adaptive antennas at the mobile and base stations in an OFDM/TDMA system
, 2001 In recent years, several smart antenna systems have been proposed and demonstrated at the base station (BS) of wire-less communications systems, and these have shown that significant system performance improvement is possible.
Cheng, RSK, Wong, KK
core
DS-CDMA microcellular networks with adaptive antennas [PDF]
, 1996 This paper considers the performance of a DS-CDMA system which employs adaptive antenna technology at the basestation site of a microcell. Results for a typical microcellular environment produced with the help of a ray tracing tool highlight the ...
Tsoulos, G, Beach, MA
core +1 more source