orthogonal variables meaning in English
正交变数
Examples
- In order to support multi - rate transmission in ds - cdma , many cdma techniques such as multi - code ( mc ) scheme , orthogonal variable spreading factor ( ovsf ) and variable modulation have been used
在ds - cdma系统中多速率传输的方法有很多种，例如多码方案( mc - cdma ) ，正交可变扩频增益方案( ovsf )和多调制方案等。 - First of all , correlation properties of orthogonal variable - length spreading sequences are analyzed and new closed - form expressions of mai of the cdma systems are derived in terms of aperiodic partial correlation of variable - length sequences . then , the self - interference ( si ) , mai and bit - error - rate ( ber ) performance of the desired user in a multi - rate cdma system are analyzed
本文首先分析了正交变长扩频序列的相关特性，导出了以变长序列非周期部分相关表示的cdma系统多址干扰( mai )新的分析表达式，并分析了多速率码分多址系统中，期望用户的自干扰( si ) 、多址干扰和误比特( ber )性能。 - Concerning with the direct sequence ( ds ) cdma system , this thesis focuses on several issues related to orthogonal spreading sequences and amc , including correlation properties of orthogonal variable - length spreading sequences and their effects on ds cdma system performance , performance of multicarrier ( mc ) ds cdma system with generalized orthogonal ( go ) sequences , adaptive modulation with throughput maximization , performance of adaptive turbo - qam coded modulation in generalized fading channel and performance of amc in wcdma high speed downlink packet access ( hsdpa )
针对直接序列码分多址( dscdma )系统，本文主要研究了正交扩频序列和自适应调制编码若干问题，包括正交变长扩频序列的相关性及其对dscdma系统性能的影响、采用广义正交( go )序列的多载波直接序列码分多址( mcdscdma )系统性能、吞吐量最大化自适应调制、自适应turbo - qam编码调制在广义衰落信道中的性能，以及wcdma下行分组接入( hsdpa )中自适应调制与编码性能五个方面。