QPSK technology is widely used in digital microwave communication systems, broadband access digital satellite communications systems, mobile communications and cable television systems. QPSK ...

We present algebraic constructions for trellis and block space-time codes for BPSK and QPSK modulated systems. The new designs benefit from the algebraic approach and are general for arbitrary number ...

Abstract: We propose a new full rate space-time block code for a three transmit antenna system that is orthogonal when using a special modulation scheme, called "triple QPSK". This space-time block ...

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Scientists have developed an exact approach to a key quantum error correction problem once believed to be unsolvable, and have shown that what appeared to be hardware-related errors may in fact be due ...

For decades, quantum computers that perform calculations millions of times faster than conventional computers have remained a ...

A novel time-division MIMO technology enables phased-array receivers to operate faster with exceptional area efficiency and ...

Why do electrons favor one spin over another in twisted environments? A newly developed system lets us explore this quantum ...

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A high-efficiency power amp boosts data throughput and makes for more flexible payload architectures in power-constrained ...

These codes differ from traditional linear codes in that they consider the order of symbols rather than their values. Rank modulation techniques exploit the relative order of cell charge levels ...

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