Noncoherent Space–Time Coding: An Algebraic Perspective
نویسندگان
چکیده
منابع مشابه
Algebraic description of spacetime foam
A mathematical formalism for treating spacetime topology as a quantum observable is provided. We describe spacetime foam entirely in algebraic terms. To implement the correspondence principle we express the classical spacetime manifold of general relativity and the commutative coordinates of its events by means of appropriate limit constructions.
متن کاملModulation and Coding for Noncoherent Communications
Until recently, the theory of noncoherent communications was premised on the use of orthogonal multi-pulse modulation such as frequency shift keying. The main drawback of this modulation scheme has been its poor spectral efficiency (rate/bandwidth). This paper considers instead the more general non-orthogonal multi-pulse modulation (NMM) technique. Optimal and suboptimal noncoherent detection s...
متن کاملNoncoherent Detection for Physical-Layer Network Coding
This paper investigates noncoherent detection in a two-way relay channel operated with physical layer network coding (PNC), assuming FSK modulation and short-packet transmissions. For noncoherent detection, the detector has access to the magnitude but not the phase of the received signal. For conventional communication in which a receiver receives the signal from a transmitter only, the phase d...
متن کاملLogico-algebraic Approach to Spacetime Quantization
In the last decades the logico-algebraic approach to quantum mechanics turned to be a successful tool to render the quantum mechanical formalism on a steady operationalistic background [7]. The algebraic approach to general relativity first proposed by Geroch [1] is used to build a smearing procedure for events in the quantized theory of spacetime. It stems from the notion of basic algebra whic...
متن کاملComputing spacetime curvature via differential algebraic equations
The equations that govern the behavior of physical systems can often be solved numerically using a method of lines approach and differential algebraic equation (DAE) solvers. For example, such an approach can be used to solve the Einstein field equations of general relativity, and thereby simulate significant astrophysical events. In this paper, we describe some preliminary work in which two mo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Information Theory
سال: 2005
ISSN: 0018-9448
DOI: 10.1109/tit.2005.850139