multiple access interference造句
例句與造句
- impact of multiple access interference on capacity of a multi-rate cdma system
系統(tǒng)中多址干擾對系統(tǒng)容量的影響 - moreover, multiple access interference due to the existence of other users was analyzed
此外，還對多個用戶情形下的多址干擾進(jìn)行了分析。 - multiple access interference ( mai ) and multipath fading are two major factors limiting performances of cdma communication systems
多址干擾和多徑衰落是限制cdma系統(tǒng)性能的主要因素。 - in cdma system, multiple access interference limits the capacity of any system using conventional single user correlation or matched filter receivers
在cdma系統(tǒng)中，采用常規(guī)的單用戶相關(guān)或匹配濾波的方法，多址干擾限制了系統(tǒng)容量。 - if the assigned spreading codes are orthogonal and signals are transmitted through a flat fading channel, there will be no multiple access interference ( mai )
如果所有用戶采用理想正交擴(kuò)頻碼并且通過同步平坦衰落信道，系統(tǒng)中將不會存在多址干擾(mai:multipleaccessinterference)。 - It's difficult to find multiple access interference in a sentence. 用multiple access interference造句挺難的
- but mc-cdma system still has some problems . some of the most important sources for performance degradation of mc-cdma systems are carrier frequency offset and the multiple access interference ( mai )
然而多載波cdma系統(tǒng)也存在一些問題，多址干擾和頻率偏移等問題會帶來明顯的性能下降。 - but in tdd-cdma system, there are many problems to solve including multipath fading, perspective effect, multiple access interference which influence its capacity and quality of service
同其它c(diǎn)dma系統(tǒng)一樣，tddcdma系統(tǒng)在無線傳輸中仍然存在著多徑衰落、時延擴(kuò)展、遠(yuǎn)近效應(yīng)、多址干擾等問題，直接影響了系統(tǒng)的容量和服務(wù)質(zhì)量。 - due to multipath effect, multiple access interference ( mai ), near-far effect, and mainly the non-li ne-of-sight ( nlos ) propagation, the errors in the estimated location parameters and position location occur
在cdma蜂窩網(wǎng)的定位中，引起定位參數(shù)估計(jì)誤差與定位誤差的因素有非視距傳播效應(yīng)、多徑傳播效應(yīng)、多址干擾及遠(yuǎn)近效應(yīng)。 - in this dissertation, multiuser detection and space-time processing are combined to suppress multiple access interferences and inter-symbol interferences ( isi ) jointly in multipah fading channels with large delay spread
本文組合多用戶檢測和空時處理技術(shù)，在大時延擴(kuò)展的多徑衰落信道條件下，研究多址干擾和符號間串?dāng)_的聯(lián)合抑制。 - this paper analyse all kinds of interference of tdd-cdma system in detail, establish interference model; based on this, establish multiple access interference module of uplink . in some sense, tdd-cdma is based on smart antenna
本論文詳細(xì)研究了tddcdma系統(tǒng)存在的各種干擾，建立了干擾模型；并以上行鏈路為例，建立了上行鏈路多址干擾模型。 - when ccc are used for spreading codes, multiple access interference ( mai ) is zero theoretically even under asynchronous transmission . if cc / ccc are used for spreading codes, one data symbol could be transmitted during one-chip duration
若采用互補(bǔ)碼作為擴(kuò)頻碼，理論上而言，不管在同步模式還是異步模式下，都不存在多址干擾；又可用特殊的調(diào)制方式做到在1個碼片的時間內(nèi)傳輸一個數(shù)據(jù)符號。 - the cdma multiuser detection is one of the key technique of the third communication system . in cdma communication system, there always have some relativity in the sequence assigned to the users, which is the root of multiple access interference
cdma系統(tǒng)多用戶檢測技術(shù)是第三代移動通信系統(tǒng)的關(guān)鍵技術(shù)之一。在cdma通信系統(tǒng)中,指定給各用戶的特征序列總是存在一定的相關(guān)性,這就是多址干擾產(chǎn)生的根源。 - direct sequence-code division multiple access ( ds-cdma ) communication systems are interference-limited systems . a cdma system employing conventional detect techniques will be degraded in performance and limited in capacity because of multiple access interference ( mai ) and near-far effects
ds-cdma通信系統(tǒng)是一個干擾受限系統(tǒng)，傳統(tǒng)的檢測技術(shù)由于多址干擾和“遠(yuǎn)?近”效應(yīng)的影響使系統(tǒng)的性能和容量明顯下降。 - the power of multiple access interference ( mai ) directly confines the capacity of ds-cdma system . as the mainstream of mai suppression technologies, multi-user detection ( mud ) performs a significant role to improve the bit error rate ( ber ) performance and to increase the capacity of systems
在直擴(kuò)碼分多址(ds-cdma)系統(tǒng)中存在的多種干擾中，多址干擾對系統(tǒng)性能的影響最為強(qiáng)烈，多址干擾的強(qiáng)弱會直接影響到系統(tǒng)容量的大小。 - the 3rd generation ( 3g ) mobile communications system and part of the 2nd generation ( 2g ) mobile communications use pn sequences or walsh codes as spread codes, and their system capacities are limited by the multiple access interference ( mai ) from asynchronous transmitted signals
采用pn序列和walsh碼進(jìn)行直序列擴(kuò)頻的第三代和部分第二代cdma移動通信系統(tǒng)，其容量受到異步傳輸時多址干擾的限制，其數(shù)據(jù)率因在n個碼片的時間內(nèi)只能傳輸一個數(shù)據(jù)符號而受限。
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