• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE International Conference on Communications >Predictive Quantization and Joint Time-Frequency Interpolation Technique for MIMO-OFDM Precoding
【24h】

Predictive Quantization and Joint Time-Frequency Interpolation Technique for MIMO-OFDM Precoding

机译：MIMO-OFDM预编码的预测量化和时频联合内插技术

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Precoding transmissions in wireless MIMO systems is essential to enable optimal utilization of the spatial degrees of freedom. However, communicating the precoding matrices from the receiver is challenging, owing to large feedback requirements. Past work has shown that predictive quantization in time, as well as interpolation over frequency can be used to reconstruct the precoders over a wide band, although these techniques have not been used jointly. We propose both a predictive quantization as well as a joint time-frequency interpolation strategy for precoding matrices over the Stiefel manifold. The key insight that we use is that local tangent spaces in the manifold permit effective combination of both temporal and frequency domain information for more accurate precoder reconstruction. Simulations reveal that we obtain a significant improvement in achievable rate as well as BER reduction when compared to existing strategies.
机译：无线MIMO系统中的预编码传输对于实现空间自由度的最佳利用至关重要。然而，由于反馈需求大，因此从接收器传送预编码矩阵具有挑战性。过去的工作表明，时间预测性量化以及频率插值可用于在宽带上重建预编码器，尽管这些技术尚未一起使用。我们为Stiefel流形上的矩阵预编码提出了一种预测量化以及联合时频插值策略。我们使用的关键见解是流形中的局部切空间允许时域和频域信息的有效组合，以实现更准确的预编码器重构。仿真表明，与现有策略相比，我们在可实现的速率以及BER降低方面获得了显着的提高。

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