guard delay 中文意思是什麼
guard delay
解釋
防護延遲-
And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion
論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。 -
The effects, caused by rms delay spread estimation, on choosing the right guard interval length is also discussed. simulation results are given as well
分析了rms時延擴展估計誤差對于保護間隔長度選定的影響，並給出模擬結果。 -
Based on the cyclic prefix property of the guard intervals, it provides estimates for sampling positions of isi - free region by combining the techniques of delay conjugate multiplication, phase difference, symbol - by - symbol average, and edge detection
以護衛區間循環前置的特性為基礎，結合延遲共軛相乘、相位差分、符元對符元之區段式平均以及邊界偵測等技術來估計非碼際干擾區間的位置。
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