Results 31 to 40 of about 3,459 (141)

When is electromagnetic spectrum fungible? [PDF]

open access: yes, 2012
Fungibility is a common assumption for market-based spectrum management. In this paper, we explore the dimensions of practical fungibility of frequency bands from the point of view of the spectrum buyer who intends to use it.
Doyle, LE   +3 more
core   +1 more source

On the Design of Near-Optimal Generalized Block-Based Spatial Modulation With Low Detection Complexity

open access: yesIEEE Open Journal of Signal Processing
Spatial Modulation (SM) and Generalized Spatial Modulation (GSM) have attracted significant attention in the development of spectrally and energy-efficient transmission schemes for multiple-input multiple-output (MIMO) systems.
Yen-Ming Chen   +3 more
doaj   +1 more source

Multidimensional Index Modulation in Wireless Communications

open access: yes, 2017
In index modulation schemes, information bits are conveyed through indexing of transmission entities such as antennas, subcarriers, times slots, precoders, subarrays, and radio frequency (RF) mirrors.
Bhat, Sandeep   +3 more
core   +1 more source

A STUDY ON LOW-COMPLEXITY TRANSMIT ANTENNA SELECTION FOR GENERALIZED SPATIAL MODULATION

open access: yesInternational Islamic University Malaysia Engineering Journal, 2018
: Generalized spatial modulation (GSM) maps its information to the index of the transmit antenna combination, making simultaneous transmission of multiple symbol possible.
Adewale Alafia   +2 more
doaj   +1 more source

Efficient Hardware Implementation of CORDIC-Based Symbol Detector for GSM MIMO Systems: Algorithm and Hardware Architecture

open access: yesIEEE Access, 2022
Aiming at providing an efficient hardware architecture for generalized spatial modulation (GSM) multiple-input multiple-output (MIMO) systems, in this paper a COordinate Rotation DIgital Computer (CORDIC) -based symbol detector is proposed.
Hoang-Yang Lu   +5 more
doaj   +1 more source

Space-Time Index Modulation

open access: yes, 2016
In this paper, we present a new multi-antenna modulation scheme, termed as {\em space-time index modulation (STIM)}. In STIM, information bits are conveyed through antenna indexing in the spatial domain, slot indexing in the time domain, and $M$-ary ...
Chockalingam, A.   +2 more
core   +1 more source

Prefiltering-based reduced rank multiuser detection in uplink generalized spatial modulation massive MIMO system

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Exploiting generalized spatial modulation in massive MIMO system, we develop an efficient uplink multiuser detection scheme. Different from the maximum likelihood detection algorithm, the spatial and temporal data in the proposed detection scheme are ...
Wei-Chiang Wu
doaj   +1 more source

Design guidelines for spatial modulation

open access: yes, 2014
A new class of low-complexity, yet energyefficient Multiple-Input Multiple-Output (MIMO) transmission techniques, namely the family of Spatial Modulation (SM) aided MIMOs (SM-MIMO) has emerged.
Di Renzo, Marco   +4 more
core   +3 more sources

Joint Design of the Spatial and of the Classic Symbol Alphabet Improves Single-RF Spatial Modulation

open access: yesIEEE Access, 2016
A new joint spatial and classic symbol alphabet is designed for spatial modulation (SM)-based multiple-input multiple-output systems. The employment of multiple active antennas instead of a single active antenna is proposed for increasing the achievable ...
Pranav S. Koundinya   +2 more
doaj   +1 more source

Comparison of measurements of the outer scale of turbulence by three different techniques [PDF]

open access: yes, 2004
We have made simultaneous and nearly simultaneous measurements of L0, the outer scale of turbulence, at the Palomar Observatory by using three techniques: angle-of-arrival covariance measurements with the Generalized Seeing Monitor (GSM), differential ...
Borgnino, Julien   +7 more
core   +1 more source

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