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首頁 > 研究所、轉學考(插大)◆通訊系統 > 110年 - 110 國立中央大學_碩士班招生考試_通訊工程學系：通訊系統#110494 > 申論題

題組內容

3. [15%] For M-ary PSK, the transmitted signal with equal probability is of the form

(b) Please sketch the observation space and show the optimal partitioning of the observation

相關申論題

(c) Please sketch a block diagram of the optimal (minimum symbol error probability) receiver for M=8.(5%)

(a) Write the expression of the spectrum of y(t) in terms of.(10%)

(b) Sketch the spectrum of y(t), labeling all important frequencies and amplitudes. (5%)

(a) What is the z-transform expression h[z] of the impulse response of the multipath channel? (5%)

(b) By ignoring the propagation delay T at the receiver, draw the structure of a tapped-delay- line equalizer with weighting coefficients not less than and give the coefficient values in order to accommodate the channel. (10%)

(a) If the binary number of Xis transmitted with equal probability P(+1)=P(-1) = 0.5 , what is the error probability for detecting Xfrom Y when Z =0? (5%)

(b) If the binary number of Xis transmitted with unequal probabilities P(+1)=0.6 and P(-1) = 0.4. Find the optimum decision threshold Z such that the error probability for detecting X from Y is minimum? What is the minimum detection error probability? (10%)

(c) Whether the case in (b) has smaller error probability than that in (a)? Do you think it could be a good communication policy to send the binary number with unequal probabilities based on minimum transmission error probability? Explain your reason. (5%)

1.領導者在制定決策之前會與部屬共同諮商並採用部屬之建議,係為____領導風格。

2.利用網狀圖將計畫的工作內容,適當地劃分成若干工作單元,排定合理而經濟的順序, 計算每一工作單元所需時間,配屬適當資源,並不斷根據進度做調整與修正,使計畫如期準確的完成,此種技術稱之為______。

相關試卷

110年 - 110 國立中央大學_碩士班招生考試_通訊工程學系：通訊系統#110494

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