无发射端信道知识情况下OFDM与SC-DFE容量的比较
Comparison of OFDM and SC-DFE Capacities Without Channel Knowledge at the Transmitter
AI总结：
本文通过代数运算和凹性性质证明，SC-DFE在4-和16-QAM调制下始终优于OFDM，但高阶调制下OFDM可能在特定场景下略微超越理想SC-DFE容量。
摘要：
本文提供了一种在发射端无信道知识情况下OFDM与理想SC-DFE容量的比较分析。通过OFDM和SC-DFE容量的代数运算，并利用 manipulated 容量函数的凹性性质和Jensen不等式，证明了SC-DFE容量始终优于OFDM方案在4-和16-QAM调制下。然而，对于高阶调制，结果表明在某些特定场景下，OFDM可能仅能略微超越理想SC-DFE容量。
英文摘要：
This letter provides a capacity analysis between OFDM and the ideal SC-DFE when no channel knowledge is available at the transmitter. Through some algebraic manipulation of the OFDM and SC-DFE capacities and using the concavity property of the manipulated capacity function and Jensen's inequality, we are able to prove that the SC-DFE capacity is always superior to that of an OFDM scheme for 4- and 16-QAM for any given channel. For higher-order modulations, however, the results indicate that OFDM may only surpass the ideal SC-DFE capacity by a small amount in some specific scenarios.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
