State-of-the-art spectrum auctions are designed under a primary market paradigm to
conduct spectrum trading between legacy owners and large cognitive service providers. In …

Orthogonal frequency-division multiplexing (OFDM) is well-known as a high-bit-rate
transmission technique, but the Doppler frequency offset due to the high speed movement …

Superposition coding is a well-known capacity-achieving coding scheme for stochastically
degraded broadcast channels. Although well-studied in theory, it is important to understand …

在正交频分复用(OFDM) 系统中, 因高速移动造成的多普勒效应导致子载波间正交性的破坏并
产生载波间干扰(ICI). 为了消除ICI, 本文通过分析ICI 分布特性及带状矩阵特性 …

在时分双工(TDD) 多天线系统中, 由于上行信道估计误差和上下行传输时延,
上下行链路信道的互易性并不理想. 针对非理想互易条件下基于最小均方误差线性接收准则的 …

In orthogonal frequency division multiplexing (OFDM) systems, Doppler effect introduced by
high-mobility leads to the loss of subcarrier orthogonality and the occurrence of inter-carrier …

This dissertation is concerned with digital communications systems operating over channels
that vary in time due to mobility of the transmitter or receiver. Velocity of the transmitter or …

Multicarrier modulation is well suited for future wireless communication systems due to its
ability to opportunistically transmit across unoccupied frequency bands. In addition to …

Orthogonal frequency division multiplexing (OFDM) systems may confront significant
intercarrier interference (ICI) when applied in doubly selective channels. Furthermore, the …

OFDM applied systems are the candidates for the future wireless communications. However,
high peak-to-average ratio (PAPR) degrades the system performance. Applying the signal …