CAREER: Robust Coded Modulation for Fading Channels and Rate-Compatible Puncturing

所提出的研究调查技术，以提高通信系统的鲁棒性和自适应性的双重属性。 鲁棒性允许相同的传输在各种各样的信道条件下始终良好地工作，而自适应性允许发射机专门化以匹配估计的信道和业务条件。 我们提出了五个具体的技术，以提高实际系统的鲁棒性和自适应性的调查。 首先，我们将开发新的高速率鲁棒网格码，以满足数字音频广播和非对称数字用户环路的鲁棒性的行业需求。 其次，我们将确定新的家庭的速率兼容的格码，提供速率的灵活性，采用大星座的传输。 第三，我们将探讨应用级联码和迭代译码（即涡轮码）的鲁棒编码问题。 第四个主题是调查的信道估计的鲁棒性和速率兼容的格码，和第五个主题是检查信道估计精度如何影响的信息速率与汤姆林森-Harashima预编码实现。

The proposed research investigates techniques to enhance the dual properties of robustness and adaptivity in communications systems. Robustness allows the same transmission to work consistently well for a wide variety of channel conditions while adaptivity permits transmitter specialization to match estimated channel and traffic conditions. We propose investigation of five specific techniques for improving robustness and adaptivity in practical systems. First, we will develop new high-rate robust trellis codes to meet industry needs for robustness in digital audio broadcast and asymmetric digital subscriber loops. Second, we will identify new families of rate-compatible trellis codes that provide rate flexibility for transmissions employing large constellations. Third, we will explore the application of concatenated codes and iterative decoding (i.e. turbo codes) to the robust coding problem. The fourth topic is the investigation of channel estimation for robust and rate-compatible trellis codes, and the fifth topic is an examination of how channel estimation accuracy affects the information rates achievable with Tomlinson-Harashima precoding.