...
首页> 外文期刊>Information Theory, IEEE Transactions on >Approximate Characterizations for the Gaussian Source Broadcast Distortion Region
【24h】

Approximate Characterizations for the Gaussian Source Broadcast Distortion Region

机译:高斯源广播失真区域的近似特征

获取原文
获取原文并翻译 | 示例
           

摘要

We consider the joint source-channel coding problem of sending a Gaussian source on a $K$-user Gaussian broadcast channel with bandwidth mismatch. A new outer bound to the achievable distortion region is derived using the technique of introducing more than one additional auxiliary random variable, which was previously used to derive sum-rate lower bound for the symmetric Gaussian multiple description problem. By combining this outer bound with the achievability result based on source-channel separation, we provide approximate characterizations of the achievable distortion region within constant multiplicative factors. Furthermore, we show that the results can be extended to general broadcast channels, and the performance of the source-channel separation based approach is also within the same constant multiplicative factors of the optimum.
机译:我们考虑在带宽不匹配的$ K $用户高斯广播信道上发送高斯源的联合源信道编码问题。使用引入一个以上的辅助随机变量的技术,得出了可实现的失真区域的新外部边界,该技术先前曾用于得出对称高斯多重描述问题的求和率下界。通过将此外边界与基于源通道分离的可实现性结果相结合,我们提供了在恒定乘法因子内可实现失真区域的近似特征。此外,我们表明结果可以扩展到一般广播频道,并且基于源-频道分离的方法的性能也在最佳的相同常数乘法因子之内。

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