In this paper, we argue that the metaphor form of a comparison (i.e., a topic-vehicle pair) is preferred over, and more comprehensible than, the simile form when the interpretive diversity for that comparison is high. Interpretive diversity refers to the richness of the figurative meaning of a comparison; it is high to the extent that more features or properties are related to the figurative me...

A simple and systematic approach for constructing full diversity -dimensional constellations, carved from lattices over a number ring , is proposed for an arbitrary dimension . When = [ ], the th cyclotomic number ring, all the possible dimensions that allow for achieving the optimal minimum product distances using the proposed approach are determined. It turns out that one can construct optima...

We consider a point-to-point flat-fading MIMO channel with channel state information known both at transmitter and receiver. At the transmitter side, a lattice coding scheme is employed at each antenna to map information symbols to independent lattice codewords drawn from the same codebook. Each lattice codeword is then multiplied by a unitary precoding matrix P and sent through the channel. At...

Multi-Input Multi-Output(MIMO) techniques can achieve higher throughput and improved reliability in wireless broadband communications by exploiting spatial diversity in multiple-antenna wireless communications. By combining the spatial diversity and spatial multiplexing we can fully exploit the MIMO channel capacity. BitInterleaved Coded Multiple Beamforming (BICMB) can achieve both spatial div...

Orthogonal space-time block coding is a transmit diversity method that has the potential to enhance the forward capacity. For a communication system with complex alphabet, full diversity and full code rate space-time codes are available only for two antennas, and for more than two antennas full diversity is achieved only when the code rate is lower than one. A quasi-orthogonal code could provid...