LTE‐DSRC hybrid vehicular communication system using DFT‐spread OFDM in uplinkdata securityhetVNetICTnetwork layerphysical layervehicular networkTechnologies are advancing at a rapid rate in the current era.
Cooley's final recommendations in his paper are worth serious consideration by researchers in technical areas: • Prompt publication of significant achievements is essential. • Review of old literature can be rewarding. • Communication among mathematicians, numerical analysts, and workers in a ...
(FIR). DFTs, DCTs, and FIRs are used in innumerable communication and signal processing applications. For example: the DFT is commonly used in high data rate Orthogonal Frequency Division Multiplexing (OFDM) systems such as Long Term Evolution (LTE), WiMax, WiLAN, DVB-T, etc; one of the ...
我们以 O F D M 系统的单尖刺消除问题为例,对 L M S 和DFT-LMS 两个算法进行性能对比。仿真环境中,OFDM 的载波数量为 64,每个 OFDM 符号的循环前缀为 16,每个子载波上发送的数据为 QPSK 调制。OFDM 信号发射后经过了一 个瑞利衰落信道 [10-11]。在接收端,信号受到尖刺干扰,尖刺的基带等效的中心频率...
FIG. 4 shows a diagram illustrating frequency response of a ZT DFT-s-OFDM reference sequence generated with a conventional ZT DFT-s-OFDM transmitter chain, in which the non-flat frequency response is due to the pre-DFT zero-padding operation, which affects the property of the original referenc...
A method for receiving a physical downlink control channel (PDCCH) by a terminal on the basis of discrete Fourier transform spreading orthogonal frequency division multiplexing (DFT-S-OFDM), in a wireless communication system according to an embodiment may comprise the steps of: receiving, from a ...
In a wireless communication system according to an embodiment, a method of receiving, by a user equipment (UE), physical downlink control channels (PDCCHs) based on discrete Fourier transform spreading orthogonal frequency division multiplexing (DFT-S-OFDM) includes receiving, from a base station (...
DFT-Spread OFDMPhase noisePhase noise compensationICIHigh-order QAMPrevious studies have revealed the similarity between phase noise in the symbol domain of discrete Fourier transform spread (DFT-Spread) coherent orthogonal frequency division multiplexing (CO-OFDM) systems and that in the time domain. ...
The results show that the peak-to-average power ratio (PAPR) of OFDM could be reduced effectively by applying DFT-spread. As result, the strong nonlinearity tolerance is obtained. The measured BER could meet the requirement of forward-error correction (FEC) limit well....
We carry out the visible light communication using DFTS-OFDM modulation mode through the headset port to and take equalization technique to compensate the channel. In this paper, we first test the feasibility of the DFTS-OFDM modulated VLC system by analyzing the constellation and the transmission...