today, many companies have multiple channels, such as sales force, direct mail / catalog, internet and broadcast channels, telephone, etc. for providing goods and services to its customers. multiple distribution channels, despite having benefits, several challenges such as the incidence of conflict, allocation of product, free ride some members have being emerged. the aim of this study was to i...

nowday, with technology progress and the emergence of new business models, increased levels of competition and changing demands and expectations of customers, using multi channels of distribution is growing rapidly. using multiple distribution channels, despite having advantages, have many challenges as coordination and integration of these channels with high efficiency and eliminate these chal...

Wireless mesh networks (WMNs) which mediates the broadband Internet access, have been recently received many attentions by the researchers. In order to increase capacity in these networks, nodes are equipped with multiple radios tuned on multiple channels emerging multi radio multi-channel WMNs (MRMC WMNs). Therefore, a vital challenge that poses in MRMC WMNs is how to properly assign channels ...

This paper considers the Gaussian multiple-access channel (MAC) in asymptotic regime where number of users grows linearly with code length. We propose efficient coding schemes based on random linear models approximate message passing (AMP) decoding and derive error rate achieved for a given user density, payload (in bits), energy. The tradeoff between energy-per-bit achievable density (for fixe...

An achievable region for the -channel multiple description coding problem is presented. This region generalizes twochannel results of El Gamal and Cover and of Zhang and Berger. It further generalizes three-channel results of Gray and Wyner and of Zhang and Berger. A source that is successively refinable on chains is shown to be successively refinable on trees. A new outer bound on the rate-dis...