【正文】 all binations carry on a calculation, can get X most Greatly strange value is ten thousand, while attain the same mistake code function top boundary, parison the type and type, can be concern with the examination letter ratio and concern with an examination letter a ratio notSeveral of the relation of }=P}/}Z(1+2 pus)} be, concern with the examination ratio to concern with the examination function not on the wood can good 6 dB o But because of type(9) is according to the parison of the mistake code function top boundary, the both sexes can ascend the boundaryLoose tight the degree is different, so with actual the function contain certain difference, passing a following calculation The machine emulation imitated to really give confirmation, the a function difference is or so in the 3 be over languages Imitate a true result We verified the wood text to put forward first of the separation ML examination calculate way and adopt whole Hour of the ML examination search of the function is pletely consistent, agreeing with the theories analysis .Then We to M=2(as a result P=2) and K=2(as a result T=4) of the ST FSK ado p t The function that concerns with of[with] the separation ML examination method that the examination and this text put forward not makeImitate a true parison. For simple rise to see in all l y imitate really all suppose receive the antenna number for1, the letter way is an AWGN flat benefit edown the letter way, and protect in time length T Hold constantly, separate the ML examination method among them respectively imitate really believe a way and estimate in the idea l A cc the letter way under condition of function. Imitate a true results h as figure,3 show .See from the diagram, Ideal letter way under circumstance concern with examination pare not concern with the 。t know H about Hour of function like 2 doubly, to single importation list output the FSK make of imitate true enunciation, at Medium etc. letter the pare the hour concern with examination pare not concern with examination function good about 3 dB So IC an estimate to under general circumstance the advantage concerned with an examination to bring should be big in the list Antenna of 3, but can39。 but adoption centLeave the ML receiver structure, operate plications with send out antenna to present line sexual behavior。 cultural heritage[2] in of not mutually thousand examination The method pare above two kinds of plications have to lower 。for receive Antenna .Ascend of add sex voice, can distinguish model to change in to all be worth for., The square is bad for cloud, The independence of the hour distributes together of reply Gauss to change quantity random. The matrix of the signal means the form is a YXH+E, its towel XBE the IXN flatness to decline letter a way characteristic matrixThe TXN adds sex voice matrix .At the matrix Y, in the X and E, the level direction mean empty Distribute, the perpendicular direction means time distribute. The S is 1= FSK39。[month, mean the row vector k chemical element: the IN mean N rank unit matrix .Want to send out the signal matrix to carry on to all to be whole before not adopt the simplification calculate way Search, again because of the full speed rate design, P=M, as a result plications along with send out antennaAnd enter increment of make the number to present index number to add doubly. Our adoption and the cultural heritage 川 is similar to of the letter way model. Consider a MIMO System, have M to send out antenna, the N receives antenna, the assumption is sending out T The letter way of antenna inside the time length of the sign for flat decline(the frequency chooses notSex)the letter way. The vector of the signal mean form is :BE receive antenna the last TXI receive signal row The quantity, the x, sends out antenna, the last TX t sends out signal row vector .Spirit. Mean From send out the falling off path that the antenna m arrives an of receive the antenna n to increase a benefit。 mean Fr ob e n us Number。the ⑩ mean the K r one product。(3)the wood text put forward of the separation ML examination method and text Dedicate[1,2] in of concern with the examination method to pare not, one is a function to is big in 3 dB of good Place , can make to translate the code plications moreover from with send out antenna the index number relation to reduce for Present 、In order to concerning with an examination to need to know the letter way an appearance information, the abovementioned operation measure of let up Didn39。s separating the main characteristics of the ST FSK of[with] the ML examination method BE:(1) a do p t Use the real amount full speed rate is hand over a design, be to send out the antennaAcquire the full marks gathers to increase a benefit。3英文翻譯Implementation of ST FSK Detection Based on Decoupled Maximum Likelihood Detection Gao Yuanyuan Shen Yuehong Hu Xianbin (Department of Radio Communication /CE, PLAUST, Nanjing 210007, China)Abstract This paper presents a decoupled maximum likelihood(ML) detection algorithm, which utilizes the orthogonalcharacteristic of signal, decoupled the bined ML detection into separated one, under the assumption that CSI is knownat the receiver. Utilizing appropriate channel estimation algorithm, the decoupled algorithm not only sharply reduces theputational plexity pared to the noncoherent ML detection, but also improves the performance. Simulationresults confirm the effectiveness of the algorithm.Key words SpaceTime Frequency Shift Keying(STFSK), Unitary design, Decoupled Maximum Likelihood (ML)detection, Coherent maximum likelihood detectionPreface The FSK makes a way is high because of its power utilization, be subjected to the limit letter way in the power thusWin to get extensively applied, if the military corresponds by letter to correspond by letter and