This overview portrays the evolution of orthogonal frequency division multiplexing (OFDM)
research. The amelioration of powerful multicarrier OFDM arrangements with multiple-input …

Multiple-input multiple-output (MIMO) transmission is attracting interest for increasing the
transmission rates of wireless systems. This paper surveys MIMO transmission technology …

One of the biggest challenges in operating massive multiple-input multiple-output systems is
the acquisition of accurate channel state information at the transmitter. To take up this …

Adaptive arrays are especially effective in reducing cochannel interference and increasing
channel capacity in time-division duplex (TDD) mobile communication systems because …

Adaptive antennas are recognized as a means of increasing the performance of
communications systems. However, practical realization of such systems relies on suitable …

This paper presents a high gain millimeter‐wave (mmW) low‐temperature cofired ceramic
(LTCC) microstrip antenna array with a compact, simple, and low‐profile structure …

Full-dimension MIMO (FD-MIMO) using planar active antenna systems (AAS) is considered
a critical technology for fifth-generation (5G) cellular systems to improve network capacity …

An adaptive antenna testbed for mobile communication applications is briefly described and
results from field trials presented. The goal is to provide an experimental demonstration of …

There is still an open debate within the research community regarding the likely
performance enhancement of smart antennas versus their complexity for commercial …

Precise and quick multi-beam forming including null control will be one of the key
technologies for the future satellite communication systems utilizing SDMA (Space Division …