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Call elapsed time and reduction in code blocking for WCDMA networks

机译:WCDMA网络的呼叫经过时间并减少代码阻塞

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Traditional Orthogonal Variable Spreading Factor (OVSF) code assignment designs aim to reduce code blocking irrespective to the complexity and cost involved. We propose an OVSF code assignment scheme which reduces the complexity involved as compared to crowded first assignment scheme (which is one of the most popular single code assignment schemes). This is because the proposed scheme needs to check the immediate parent of the vacant code for code assignment. The crowded first scheme on the other hand checks all the ancestors of the vacant codes up to the root of the code tree. The code blocking performance can be inferior to the CFA design but the number of code searches (which decides the speed of the assignment design) is reduced considerably. Simulation results are demonstrated to show the superiority of the proposed design.
机译:传统的正交可变扩频因子(OVSF)代码分配设计旨在减少代码阻塞,而与所涉及的复杂性和成本无关。我们提出了一种OVSF代码分配方案,与拥挤的第一分配方案(这是最流行的单个代码分配方案之一)相比,它可以降低所涉及的复杂性。这是因为提议的方案需要检查空闲代码的直接父代进行代码分配。另一方面,拥挤的第一个方案检查空代码的所有祖先,直到代码树的根。代码阻止性能可能不如CFA设计,但是代码搜索的次数(决定分配设计的速度)大大减少了。仿真结果表明了所提出设计的优越性。

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