EESM for IEEE 802.16e: WiMaX

Seventh IEEE/ACIS International Conference on Computer and Information Science (icis 2008) Pub Date : 2008-05-14 DOI:10.1109/ICIS.2008.33

S. Mumtaz, A. Gameiro, Jonathan Rodriguez

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引用次数: 21

Abstract

For Link Level interfacing packet switched simulation adopt the AVI (actual value interface) approach for mapping the computed SNR to the Block Error Rate (BLER) Statistics. However in OFDM based system the BLER is invariant within Radio transport channel due to fading channel and adjutant bit carriers mapping, rendering the A VI to be inaccurate. Due to large variability of the channel in frequency domain, two links with same average SNR can experience drastically different performance, thus making it difficult to accurately predict the instantaneous link performance such as Frame Error Rate (FER). To overcome this problem with AVI the EESM has been used as a low complexity approach. In this paper the feasibility of EESM as an abstraction method is investigated, and then calibrated and evaluated for Link Level Interface in WiMax System IEEE802.16e.This methods is then extended to handle more advanced link enhancement such as Alamouti encoding. The Exp-ESM method has better accuracy than the existing link error methods, and preferred link error predictor for system simulator.

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EESM用于IEEE 802.16e: WiMaX

对于链路级接口分组交换仿真，采用AVI(实际值接口)方法将计算的信噪比映射到块错误率(BLER)统计。然而，在基于OFDM的系统中，由于信道衰落和辅助位载波映射，在无线传输信道内，BLER是不不变的，使得A VI不准确。由于信道在频域中具有很大的可变性，具有相同平均信噪比的两条链路的性能可能会有很大的差异，因此难以准确预测链路的瞬时性能，如帧错误率(FER)。为了克服AVI的这个问题，EESM被用作一种低复杂度的方法。本文研究了EESM作为一种抽象方法的可行性，并对WiMax系统IEEE802.16e中的链路级接口进行了标定和评估。然后扩展此方法以处理更高级的链路增强，如Alamouti编码。Exp-ESM方法比现有的链路误差方法具有更高的精度，是系统模拟器首选的链路误差预测器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Seventh IEEE/ACIS International Conference on Computer and Information Science (icis 2008)

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