Power allocation for block-fading channels with arbitrary input constellations
نویسندگان
چکیده
منابع مشابه
Power Allocation for Discrete-Input Delay-Limited Fading Channels
We consider power allocation algorithms for fixed-rate transmission over Nakagami-m nonergodic block-fading channels with perfect transmitter and receiver channel state information and discrete input signal constellations, under both shortand long-term power constraints. Optimal power allocation schemes are shown to be direct applications of previous results in the literature. We show that the ...
متن کاملPower Allocation Strategies in Block-Fading Two-Way Relay Networks
This paper aims at investigating the superiority of power allocation strategies, based on calculus of variations in a point-to-point two-way relay-assisted channel incorporating the amplify and forward strategy. Single and multilayer coding strategies for two cases of having and not having the channel state information (CSI) at the transmitters are studied, respectively. Using the notion of cal...
متن کاملCoded Modulation with Rotated Multidimensional Constellations in Block-Fading Channels
We study the problem of constructing coded modulation schemes over multidimensional signal sets in Nakagamim block-fading channels. In particular, we consider the optimal diversity reliability exponent of the error probability when the multidimensional constellation is obtained as the rotation of classical complex-plane signal constellations. We show that multidimensional rotations of full dime...
متن کاملMultiple-antenna signal constellations for fading channels
In this paper we show that the problem of designing eÆcient multiple-antenna signal constellations for fading channels can be related to the problem of nding packings with large minimum distance in the complex Grassmannian space. We describe a numerical optimization procedure for nding good packings in the complex Grassmannian space and report the best signal constellations found by this proced...
متن کاملOptimal power allocation over fading channels with stringent delay constraints
We study the optimal power allocation scheme for i.i.d. block-fading channels [1] with a strict transmission delay constraint. In particular, we consider the maximization of the total throughput within a finite interval under a short-term average power constraint. When all the channel gains are known apriori, we demonstrate the mapping between the delayconstrained channel and the corresponding ...
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 Wireless Communications
سال: 2009
ISSN: 1536-1276
DOI: 10.1109/twc.2009.080248