Extensive integration of online and offline channels is often considered the preferable strategy for multi channel retailing. However, empirical findings contradict this assumption and show that retailers choose divergent multi channel strategies. In this paper, we present a model of strategic channel alignment and define four alignment perspectives that can help to reconstruct and interpret de...

In mobile ad-hoc network, some multi -channel MAC protocols utilize multiple channels to reduce the collision of wireless transmission and thus get high throughput. These multi channel MAC protocols aim at improving the performance of unicast communication, and multicast data are generally transmitted through broadcast. So multicast can’t benefit from the multi -channel technique. This paper pr...

Recently, various schemes were proposed for parametric coding of stereo and multi-channel audio signals. Binaural Cue Coding (BCC) is such a technique. It represents multi-channel audio signals as a single downmixed channel plus a small amount of side information. BCC can be applied to mono and stereo backwards compatible coding of multi-channel audio signals. In this paper, we propose a genera...

This paper proposes an idea to modify the conventional Wilkinson power dividers to have physically spaced output ports. The well-known internal resistor of Wilkinson power divider is now connected to output ports by two additional transmission lines to create a triangular shape power divider. Several modified power dividers are designed at frequency of 1.0 GHz and one of them is fabricated and ...

This paper presents the design of a compact integrated UWB-UHF RFID solution enabling simultaneous wireless data and power transfer. The described integrated dual-band antenna is designed to cover the lower European UWB 3.1 to 4.8 GHz band for communication and localization functions and the European UHF RFID 868 MHz band for RF Energy Harvesting. Simultaneous operations are guaranteed by means...

In this paper, we propose the design of multilayer frequency selective surfaces (FSS) waveguide band-pass filters (WBPF). The WBPFs are designed to operate at two different frequency channels, respectively 71–76GHz (Rx) and 81–86 GHz (Tx). The cross section surface of the FSS is imposed by the WR12 waveguide rectangular section’s dimensions. The WBPFs are inserted symmetrically in a T-junction ...

We propose a multi-channel speech dereverberation approach based on cross-channel cancellation and spectrogram decomposition. The reverberation is modeled as a convolution operation in the spectrogram magnitude domain. Using the Itakura divergence (I-divergence), we decompose reverberant spectrogram into clean spectrogram convolved with a deconvolution filter. The speech spectrogram is constrai...