Hadamard matrices, orthogonal designs and amicable orthogonal designs have a number of applications in coding theory, cryptography, wireless network communication and so on. Product designs were introduced by Robinson in order to construct orthogonal designs especially full orthogonal designs (no zero entries) with maximum number of variables for some orders. He constructed product designs of o...

A crucial point in nonlinear dynamic modeling is the design of a suited excitation signal. It has to fulfill several criteria, like coverage of important amplitude levels and of important frequency range, and for multichannel systems an orthogonal or at least as orthogonal as possible design is desired. Differing from theoretically optimal excitation signals, we suggest the use of smooth signal...

A multi-structured design is a block design whose blocks have further structure like partitions, orders, arrays, etc. This problem have strong relationship to combinatorial arrays like orthogonal arrays, balanced arrays, and also many types of sequence problems, optical orthogonal codes, frequency hopping sequences, comma-free codes, etc. There are many different names of block designs which ha...

1 The stated choice (SC) experiment is generally regarded as an effective way to obtain data for 2 discrete choice analysis. The SC experimental design method, which determines the rule to allocate 3 different levels for each attribute in choice situations, will have a great impact on parameter 4 estimation. The optimal orthogonal choice (OOC) design is one of the most efficient SC designs, by ...

This paper proposes orthogonal time sequency multiplexing (OTSM) , a novel single carrier modulation scheme that places information symbols in the delay-sequency domain followed by cascade of time-division (TDM) and Walsh-Hadamard sequence multiplexing. Thanks to Walsh Hadamard transform (WHT),...