practical spreading是什么意思_practical spreading中文

practical spreading中文什么意思

practical: adj. 1.实地的，事实上的，实际上的 (opp. t ...
spread: vt. (spread) 1.伸开，伸长(手臂等)，展开 ...
spreading: 就侦察线散开; 跨期买卖；跨价买卖; 扩展; 扩张; 拉布; 使药液能散布; 套期图利：同时买进与卖出相关期货合约以获取价差利润的各种套利方式; 涂布; 展宽撒布接长摊铺套期图利喷散敷敷涂分散风险蔓延加宽焊道
be practical: 实际一点吧
spreading rate spreading capacity: 涂布率

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Based on software radio technology practical spread spectrum communication construction of system and principle analysis
基于软件无线电技术的实用扩频系统结构及原理分析
However , due to nonorthogonality of practical spreading sequences , the conventional correlator suffers from the near - far problem
最后，针对随当前网络信息系统的不断拓展与延伸，信息保密与安全的重要性日渐突出的问题。
Cdma has become the main technology of the third generation mobiletelecommunication . many users in cdma system are distinguished by differentspread sequences and have the same time chip and frequency unlike in theconventional tdma system or fdma system . but the practical spread sequences cannot reach the ideal condition , the correlation function equals zero , so that it will causethe multiple access interference ( mai ) when lots of people are communicating . multi - user detection ( mud ) makes joint detection on the received signals by makingfull use of the information of all users ’ , which relaxes mai and increases the capacityof system
Cdma技术已经成为第三代移动通信系统中的主流技术,它与传统的fdma 、 tdma不同,在cdma系统中多个用户均占用同一时隙、同一频隙,所不同的是选取的地址码不同,而实际选用的地址码间的互相关函数又不可能全部达到理想状态的全为零,因而造成了多个用户同时通信时,必然要产生多址干扰。

practical spreading中文什么意思