基站协作OFDMA系统中面向混合业务的资源分配

基站协作是多小区OFDMA系统中抑制共信道干扰、提高系统容量的有效手段。如何分配无线资源以实现资源与业务最佳匹配是基站协作OFDMA系统中的关键问题。现有的研究大多面向单一业务。该文研究了尽力而为(BE)与有速率约束(RC)两类典型业务共存情况下的子载波与功率分配问题，提出了一种两阶段的启发式算法。算法的第1阶段仅为RC用户分配资源，通过引入子载波价值矩阵，最小化满足RC用户速率约束所需的子载波数；第2阶段将剩余子载波分配给BE用户以最大化他们的和速率。仿真结果表明，所提算法在系统中断概率及BE用户和速率两项指标上均优于已有方法。

Resource Allocation for Heterogeneous Services in OFDMA Systems with Base Station Cooperation

Base Station Cooperation(BSC) is considered as a promising way for Co-Channel Interference(CCI) mitigation and system capacity improvement in multicell OFDMA systems.How to allocate radio resource optimally to guarantee the quality of services is a key problem in OFDMA systems with BSC.Previous research mostly focuses on the case of homogenous service.This paper studies subcarrier and power allocation problem in such a system where users with Best Effort(BE) service and those with Rate-Constrained(RC) servi...