Analog Decoding Method for Simplified Short-Range MIMO Transmission

2014 ◽  
Vol E97.B (3) ◽  
pp. 620-630 ◽  
Author(s):  
Ryochi KATAOKA ◽  
Kentaro NISHIMORI ◽  
Takefumi HIRAGURI ◽  
Naoki HONMA ◽  
Tomohiro SEKI ◽  
...  
Keyword(s):  
Short Range ◽  
Mimo Transmission

scholarly journals Effects of weight errors on capacity in simple decoding of short-range MIMO transmission

2013 ◽  
Vol 2 (5) ◽  
pp. 193-199 ◽  
Author(s):  
Ken Hiraga ◽  
Kazumitsu Sakamoto ◽  
Tomohiro Seki ◽  
Tadao Nakagawa ◽  
Kazuhiro Uehara
Keyword(s):  
Short Range ◽  
Mimo Transmission

scholarly journals Theoretical and experimental analysis of spatial division using antenna directivities in short‐range MIMO transmission

2014 ◽  
Vol 50 (2) ◽  
pp. 65-67 ◽  
Author(s):  
M. Arai ◽  
T. Seki ◽  
K. Hiraga ◽  
T. Nakagawa ◽  
K. Uehara
Keyword(s):  
Experimental Analysis ◽  
Short Range ◽  
Mimo Transmission

A Novel ZF-Based Fast Beamforming Method for Short-Range MIMO Transmission

2015 ◽  
Vol 4 (5) ◽  
pp. 557-560 ◽  
Author(s):  
Kazumitsu Sakamoto ◽  
Maki Arai ◽  
Ken Hiraga ◽  
Tomohiro Seki ◽  
Toshimitsu Tsubaki ◽  
...  
Keyword(s):  
Short Range ◽  
Mimo Transmission

Analyses of Antenna Displacement in Short-Range MIMO Transmission over Millimeter-Wave

2011 ◽  
Vol E94-B (10) ◽  
pp. 2891-2895 ◽  
Author(s):  
Ken HIRAGA ◽  
Tomohiro SEKI ◽  
Kentaro NISHIMORI ◽  
Kenjiro NISHIKAWA ◽  
Ichihiko TOYODA ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Short Range ◽  
Mimo Transmission

A Study of Short-Range MIMO Transmission Utilizing Polarization Multiplexing for the Simplification of Decoding

2014 ◽  
Vol E97.B (2) ◽  
pp. 459-468 ◽  
Author(s):  
Ken HIRAGA ◽  
Kazumitsu SAKAMOTO ◽  
Kentaro NISHIMORI ◽  
Tomohiro SEKI ◽  
Tadao NAKAGAWA ◽  
...  
Keyword(s):  
Short Range ◽  
Polarization Multiplexing ◽  
Mimo Transmission

scholarly journals Performance evaluation of a simple decoding method for millimeter-wave short-range MIMO transmission through a wall

2014 ◽  
Vol 3 (4) ◽  
pp. 131-137
Author(s):  
Kazumitsu Sakamoto ◽  
Ken Hiraga ◽  
Tomohiro Seki ◽  
Tadao Nakagawa ◽  
Kazuhiro Uehara
Keyword(s):  
Performance Evaluation ◽  
Millimeter Wave ◽  
Short Range ◽  
Mimo Transmission

Domain coarsening by grain boundary migration in ordered Ni4Mo

1986 ◽  
Vol 44 ◽  
pp. 560-561
Author(s):  
K. Vasudevan ◽  
H. P. Kao ◽  
C. R. Brooks ◽  
E. E. Stansbury
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Short Range ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Rapid Cooling ◽  
Temperature Range ◽  
Fee Structure ◽  
Domain Coarsening ◽  
Boundary Reaction

The Ni4Mo alloy has a short-range ordered fee structure (α) above 868°C, but transforms below this temperature to an ordered bet structure (β) by rearrangement of atoms on the fee lattice. The disordered α, retained by rapid cooling, can be ordered by appropriate aging below 868°C. Initially, very fine β domains in six different but crystallographically related variants form and grow in size on further aging. However, in the temperature range 600-775°C, a coarsening reaction begins at the former α grain boundaries and the alloy also coarsens by this mechanism. The purpose of this paper is to report on TEM observations showing the characteristics of this grain boundary reaction.

Ordering in Ni4Mo by TEM and APFIM

1987 ◽  
Vol 45 ◽  
pp. 214-215
Author(s):  
E.A. Kenik ◽  
T.A. Zagula ◽  
M.K. Miller ◽  
J. Bentley
Keyword(s):  
Electron Irradiation ◽  
Low Temperatures ◽  
Short Range ◽  
Atom Probe ◽  
Range Order ◽  
Considerable Time ◽  
Probe Field ◽  
Disordered Phase ◽  
Transmission Electron ◽  
Diffraction Patterns

The state of long-range order (LRO) and short-range order (SRO) in Ni4Mo has been a topic of interest for a considerable time (see Brooks et al.). The SRO is often referred to as 1½0 order from the apparent position of the diffuse maxima in diffraction patterns, which differs from the positions of the LRO (D1a) structure. Various studies have shown that a fully disordered state cannot be retained by quenching, as the atomic arrangements responsible for the 1½0 maxima are present at temperatures above the critical ordering temperature for LRO. Over 20 studies have attempted to identify the atomic arrangements associated with this state of order. A variety of models have been proposed, but no consensus has been reached. It has also been shown that 1 MeV electron irradiation at low temperatures (∼100 K) can produce the disordered phase in Ni4Mo. Transmission electron microscopy (TEM), atom probe field ion microscopy (APFIM), and electron irradiation disordering have been applied in the current study to further the understanding of the ordering processes in Ni4Mo.

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