function?[EEratepower]?=?functionEnergyEfficiency（powerhetaUEetaBSnoiseRkappaUEkappaBSomegarhozetatrafficPortionULDLratio）
%This?is?an?implementation?of?energy?efficiency?metric?used?in?the?article:
%
%Emil?Bj鰎nson?Jakob?Hoydis?Marios?Kountouris?M閞ouane?Debbah?揗assive
%MIMO?Systems?with?Non-Ideal?Hardware:?Energy?Efficiency?Estimation?and
%Capacity?Limits?To?appear?in?IEEE?Transactions?on?Information?Theory.
%
%Download?article:?http://arxiv.org/pdf/1307.2584
%
%This?is?version?1.0?（Last?edited:?2014-08-26）
%
%License:?This?code?is?licensed?under?the?GPLv2?license.?If?you?in?any?way
%use?this?code?for?research?that?results?in?publications?please?cite?our
%original?article?listed?above.
%
%INPUT:
%power??????????=?Transmit?power
%h??????????????=?Channel?realizations?（dimension:?N?x?nbrOfMonteCarloRealizations）
%etaUE??????????=?Distortion?noise?realization?at?UE?
%?????????????????（dimension?1?x?nbrOfMonteCarloRealizations）
%etaBS??????????=?Distortion?noise?realization?at?UE
%?????????????????（dimension?N?x?nbrOfMonteCarloRealizations）
%noise??????????=?Matrix?with?noise?realizations?in?UL?
%????????????????（dimension:?N?x?nbrOfMonteCarloRealizations）
%R??????????????=?N?x?N?channel?covariance?matrix
%kappaUE????????=?Level?of?hardware?impairments?at?UE
%kappaBS????????=?Level?of?hardware?impairments?at?BS
%omega??????????=?Efficiency?of?power?amplifiers?at?UE?and?BS
%rho????????????=?Circuit?power?that?scales?with?N
%zeta???????????=?Circuit?power?independent?of?N
%trafficPortion?=?Portion?of?the?total?resources?available?for?data
%?????????????????transmission?in?the?direction?under?study?（smaller?than
%?????????????????ULDLratio）
%ULDLratio??????=?Fraction?of?total?resources?allocated?to?the?transmission
%?????????????????direction?under?study?（set?it?to?0.5?to?study?both?UL/DL）
%
%OUTPUT:
%EE?????????????=?Energy?efficiency?according?to?model?in?Definition?1


%A?typical?pilot?signal
d?=?sqrt（power）;

%Extract?number?of?antennas
N?=?size（h1）;

%Extract?number?of?Monte?Carlo?simulations
nbrOfMonteCarloRealizations?=?size（h2）;
????????????
%Compute?matrix?A?in?the?LMMSE?estimator?（see?Eq.?（9））
A_LMMSE?=?conj（d）?*?R?/?（abs（d）^2*（1+kappaUE）*R?+?abs（d）^2*kappaBS*diag（diag（R））+eye（N））;


%Placeholders?for?storing?Monte?Carlo?simulation?results
firstMoment?=?zeros（nbrOfMonteCarloRealizations1）;
distortionTerm?=?zeros（nbrOfMonteCarloRealizations1）;

%Go?through?all?Monte?Carlo?realizations
for?k?=?1:nbrOfMonteCarloRealizations
????
????%Compute?received?signal
????z?=?h（:k）?*?（?d?+?d*etaUE（k）?）?+?d*etaBS（:k）?+?noise（:k）;
????
????%Compute?channel?estimates
????hhat?=?A_LMMSE*z;
????
????%Compute?the?beamforming?vector?（MRT/MRC）
????beamforming?=?sqrt（power）*hhat/norm（hhat）;

????%Compute?a?realization?of?the?first?moment?of?the?inner?product?between
????%beamforming?and?channel?
????firstMoment（k）?=?h（:k）‘*beamforming;
????
????%The?elementwise?product?between?channel?and?beamforming?vectors?（and
????%sum?over?these?ele

?屬性????????????大小?????日期????時(shí)間???名稱
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?????文件????????3531??2014-08-26?13:05??functionEnergyEfficiency.m