Achievability of nonlinear degrees of freedom in correlatively changing fading channels

Author

Karzand, Mina ; Lizhong Zheng

Author_Institution

Massachusetts Inst. of Technol., Cambridge, MA, USA

fYear

2014

fDate

19-21 March 2014

Firstpage

1

Lastpage

6

Abstract

A new approach toward the noncoherent communications over the time varying fading channels is presented. In this approach, the relationship between the input signal space and the output signal space of a correlatively changing fading channel is shown to be a nonlinear mapping between manifolds of different dimensions. Studying this mapping, it is shown that using nonlinear decoding algorithms for single input-multiple output (SIMO) and multiple input multiple output (MIMO) systems, extra numbers of degrees of freedom (DOF) are available. We call them the nonlinear degrees of freedom.

Keywords

MIMO communication; fading channels; nonlinear codes; MIMO systems; SIMO; correlatively changing fading channels; degrees of freedom; input signal space; multiple input multiple output; noncoherent communications; nonlinear decoding algorithms; nonlinear degrees achievability; nonlinear mapping; output signal space; single input-multiple output; time varying fading channels; Decoding; Equations; Fading; Receiving antennas; Signal to noise ratio; Training; Correlatively Changing Channel; Mapping over manifolds; Nonlinear Decoding; Nonlinear degrees of freedom;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems (CISS), 2014 48th Annual Conference on

Conference_Location

Princeton, NJ

Type

conf

DOI

10.1109/CISS.2014.6814125

Filename

6814125