Open Channel -- Diversity of Diversity

Transmit Diversity with Channel Feedback

Transmit diversity in the presence of channel feedback at the transmitter is analyzed in this paper. We first consider perfect channel feedback and summarize the beamforming solution which minimizes the codeword error probability. We note that the error probability minimizing scheme is different from the mutual information maximizing scheme. We then present a scheme with partial channel feedbac...

Diversity in open social networks

Online communities have become become a crucial ingredient of e-business. Supporting open social networks builds strong brands and provides lasting value to the consumer. One function of the community is to recommend new products and services. Open social networks tend to be resilient, adaptive, and broad, but simplistic recommender systems can be 'gamed' by members seeking to promote certain p...

Capitalist Diversity in Open Economies

phylogeography and genetic diversity of the lesser mouse- eared bat (myotis blythii) in iran

in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...

Molecular diversity of Ca2+ channel beta subunits.

Introduction Voltage-gated Ca2+ channels have been extensively characterized in terms of their pharmacological, electrophysiological, biochemical, and molecular biological properties. Calcium channels are multisubunit complexes composed of an ion-conducting subunit, a ,, and smaller accessory subunits. Molecular cloning studies have concentrated on the a , subunit because it appears to determin...