Annotation Deploy and optimize your wireless LAN using the new standard for broadband
wireless communication, OFDM. A comprehensive reference written by two experts who …

Multiple antennas can greatly increase the data rate and reliability of a wireless
communication link in a fading environment, but the practical success of using multiple …

Transmit beamforming and receive combining are simple methods for exploiting spatial
diversity in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO …

This paper reviews the performance of optimized modulation formats in two, four, and eight
dimensions. We present performance (lower bounds) for higher dimensions by exploiting …

Abstract We present Rotated Adaptive Tetra-iterated Quantizer (RATQ), afixed-length
quantizer for gradients in first order stochasticoptimization. RATQ is easy to implement and …

We focus on the design of unitary signal constellations for differential space-time modulation
with double transmit antennas. By using the parametric form of a two-by-two unitary matrix …

A set X of points in ℜ^d is (k, b)-clusterable if X can be partitioned into k subsets (clusters) so
that the diameter (alternatively, the radius) of each cluster is at most b. We present …

Traditional constellations are uniformally spaced. By giving up uniform spacing,
constellations can be designed to have larger joint (ie overall) capacity or parallel decoding …

A fixed-rate shape-gain quantizer for the memoryless Gaussian source is proposed. The
shape quantizer is constructed from wrapped spherical codes that map a sphere packing …

Accurate channel direction information is essential to achieve considerable capacity gains in
multiple-input multiple-output (MIMO) wireless communication systems. Limited feedback …