• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2013 Information Theory and Applications Workshop >Power-efficient transmission design for MISO broadcast systems with QoS constraints
【24h】

Power-efficient transmission design for MISO broadcast systems with QoS constraints

机译：具有QoS约束的MISO广播系统的节能传输设计

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper considers a novel transmitter optimization problem for MISO broadcast systems, where a multi-antenna base station (BS) serves a set of single-antenna mobile stations (MSs) with Quality of Service (QoS) targets formulated in terms of Symbol Error Probability (SEP): data inputs are drawn from a discrete alphabet, precoding is performed by the BS to generate appropriate signals transmitted over the channel, symbol-by-symbol detection is performed at each MS, and a minimum SEP target is imposed at each MS as the QoS target. Starting with the system adopting standard constellations and with focus on 16-QAM, the SEP constraints are formulated and characterized by a set of convex relaxations on the received signals. The resulting problem is convex, and can be efficiently solved by the primal-dual interior point method. Numerical results demonstrate that the proposed precoder provides significant transmission power reduction compared with the linear zero-forcing (ZF) precoder under the same SEP targets. Turning to the system with Tomlinson-Harashima type constellations, a similar convex relaxation approach is applied and the corresponding convex optimization problem is presented. The proposed precoding scheme is shown to outperform both the previous scheme (based on regular constellations with convex relaxation) and the standard Tomlinson-Harashima precoding using zero forcing.
机译：本文考虑了一种针对MISO广播系统的新型发射机优化问题，其中多天线基站（BS）为一组单天线移动台（MS）提供服务，其服务质量（QoS）目标根据符号错误概率制定（SEP）：从离散字母中提取数据输入，由BS执行预编码以生成在信道上发送的适当信号，在每个MS处执行逐符号检测，并在每个MS处施加最小SEP目标作为QoS目标。从采用标准星座的系统开始，并着重于16-QAM，SEP约束的制定和特征在于接收信号的一组凸松弛。由此产生的问题是凸的，可以通过原始对偶内点法有效地解决。数值结果表明，与相同的SEP目标下的线性迫零（ZF）预编码器相比，该预编码器可显着降低发射功率。转向具有Tomlinson-Harashima型星座的系统，应用了相似的凸松弛方法，并提出了相应的凸优化问题。所提出的预编码方案表现出优于先前的方案（基于具有凸弛豫的规则星座图）和使用零强迫的标准Tomlinson-Harashima预编码。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号