2 papers
math.CO2016
Some non-existence and asymptotic existence results for weighing matrices
Ebrahim Ghaderpour
Orthogonal designs and weighing matrices have many applications in areas such as coding theory, cryptography, wireless networking and communication. In this paper, we first show th…
math.CO2015
Signed group orthogonal designs and their applications
Ebrahim Ghaderpour
Craigen introduced and studied {\it signed group Hadamard matrices} extensively in \cite{Craigenthesis, Craigen}. Livinskyi \cite{Ivan}, following Craigen's lead, studied and provi…