offset sub 中文意思是什麼
offset sub
解釋
偏斜接頭-
In practical design, not only nonideal factors from noise, mismatch, offset etc. are taken into consideration, but also the desired sub _ adc performance is achieved with reduced power dissipation
在具體電路設計中，不僅充分考慮了噪聲、失調和失配等非理想因素，而且在實現系統對子adc的指標限制前提下，降低了功耗。 -
You can make settings for the overheat preventive device, calibration offset, and key lock using the sub function keys
可通過副控制鍵進行溫度過升防止器、溫度校正、鍵盤鎖定設定。 -
In the synchronous techniques based pilot symbols, here propose a frequency offset estimating arithmetic using discrete pilot symbols. we pick up integer times sub - carrier frequency offset from the same ofdm symbol and estimate exact
此外，在頻偏估計方面，推導出短訓練序列前後兩段時域符號間的關系，並利用此進行粗頻偏估計，使頻率偏移的估計范圍大大增加。 -
The arithmetic searches for the least central offset through partition speech sub - band and confirms pitch period of the transition sound
該演算法主要通過劃分語音子帶來搜索最小中心偏移量，較準確地確定過渡音的基音周期。 -
Firstly, in wireless environment, receiver has no know the time delay between transmitter and itself. in ofdm system, ofdm data is transmitted as one symbol, so in order for correct demodulation, the correct start of symbol should be got from ofdm system to reduce the effect of isi. secondly, the high frequency utilization in ofdm is based on the orthogonal properties of sub carriers. if frequency offset is generated, the orthogonal properties among sub carriers will lost, that will cause inter carrier interference ( ici ) and high ber of system
Ofdm技術也存在著一些缺陷，首先，在無線環境中傳輸的ofdm信號對定時要求高，為了減少碼間串擾（ isi ）影響，必須從接收信號中提取出正確的符號起始位;其次， ofdm系統對頻率偏移敏感， ofdm技術的高頻譜利用率和傳輸可靠性均以子載波的正交性為基礎，如果接收機和發射機之間發生頻率偏移，子載波之間就會失去正交性，導致嚴重的子載波間干擾（ ici ） ，降低系統性能。
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