修订记录Revision record 2 目 录 3 缩略语清单 5 概述 6 1 MR 测量简介 6 1.1 移动规范MR介绍 6 1.2 LCR5.0产品实现 7 2 MR 开启步骤 9 2.1 观察RNC负荷 9 2.2 按照NodeB 规格工具设定开启项，确认IUB带宽配置情况是否满足要求 12 2.3 打开MR开关 12 2.3.1 通过OMC下发MML命令打开 12 2.3.2 通过OMC无线测量管理界面下发命令打开 14 3 MR 数据提取 14 3.1.1 BAM提取原始数据

In this paper, optimization of low-density parity-check (LDPC) codes to approach the symmetric information rate (SIR) of two-dimensional (2-D) intersymbol interference (ISI) channels is proposed for high-density magnetic recording, such as bit-patter