• 沒有找到結果。

零填補之正交分頻多工系統的盲蔽式通道估計

N/A
N/A
Protected

Academic year: 2021

Share "零填補之正交分頻多工系統的盲蔽式通道估計"

Copied!
64
0
0

加載中.... (立即查看全文)

全文

Loading

數據

圖 2-5 子載波間干擾說明          為了要解決子載波之間的干擾,將一個正交分頻多工系統的符元的尾端,複製到其 前端的保護區間,可以保證所有的有延遲的子載波,在傅立葉轉換區間上都有整數倍的 週期,可以成功的消除子載波之間的干擾。並以圖 2-6,圖 2-7 說明。  N g N 圖 2-6 循環字首說明  圖 2-7 以循環字首加入保護區間以消除符元間干擾與子載波間干擾說明  2.1.3  正交分頻多工系統的優缺點          這一節會對正交分頻多工系統的優缺點作簡單的總結。首先,正交分頻多工
圖 3-3 訊雜比為 20dB,,本方法與子空間之正規化的均方差對傳送區塊數目圖   
圖 3-5 訊雜比為 0dB,本方法應用最小平方法與訓練符元方法之正規化的均方差對傳送 區塊數目圖  50 100 150 200 250 300 350 400 450-25-20-15-10-50510 Block NumberNMSE(dB) Least Square(alpha) Training Symbol(alpha) 圖 3-6 訊雜比為 20dB,本方法應用最小平方法與訓練符元方法之正規化的均方差對傳 送區塊數目圖

參考文獻

相關文件

For periodic sequence (with period n) that has exactly one of each 1 ∼ n in any group, we can find the least upper bound of the number of converged-routes... Elementary number

Al atoms are larger than N atoms because as you trace the path between N and Al on the periodic table, you move down a column (atomic size increases) and then to the left across

The aim of the competition is to offer students a platform to express creatively through writing poetry in English. It also provides schools with a channel to

If the best number of degrees of freedom for pure error can be specified, we might use some standard optimality criterion to obtain an optimal design for the given model, and

An OFDM signal offers an advantage in a channel that has a frequency selective fading response.. As we can see, when we lay an OFDM signal spectrum against the

• When the coherence bandwidth is low, but we need to use high data rate (high signal bandwidth). • Channel is unknown

• When the coherence bandwidth is low, but we need to use high data rate (high signal bandwidth). • Channel is unknown

We will design a simple and effective iterative algorithm to implement “The parallel Tower of Hanoi problem”, and prove its moving is an optimal