Qun Wu's research while affiliated with Shandong University and other places
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Publications (3)
![NMSE curves with α\documentclass[12pt]{minimal} \usepackage{amsmath}...](publication/361392259/figure/fig3/AS:1168518171111424@1655607850611/NMSE-curves-with-adocumentclass12ptminimal-usepackageamsmath-usepackagewasysym_Q320.jpg)
![NMSE curves with α\documentclass[12pt]{minimal} \usepackage{amsmath}...](publication/361392259/figure/fig4/AS:1168518171099137@1655607850642/NMSE-curves-with-adocumentclass12ptminimal-usepackageamsmath-usepackagewasysym_Q320.jpg)
Channel estimation based on superimposed pilot (SP) is a challenge in orthogonal frequency division multiplexing (OFDM) systems. To reduce the pilot data interference in the SP and estimate the channel state information accurately, a weighted averaging (WA) channel estimation method based on the superimposed pilot is proposed in this paper. At the...
![Variable comb type pilots x1\documentclass[12pt]{minimal}...](publication/360629792/figure/fig3/AS:1156544041369600@1652752995088/Variable-comb-type-pilots-x1documentclass12ptminimal-usepackageamsmath_Q320.jpg)
High speed and low latency have become the development trend of mobile communication network. Orthogonal frequency division multiplexing (OFDM) technology has become the key technology of mobile communication network due to its efficient transmission method. Space time block coding (STBC) introduces time and space correlation in the signals sent by...
For improving the communication system performance in multiple input multiple output- orthogonal frequency division multiplexing (MIMO-OFDM) system, single input multiple output-orthogonal frequency division multiplexing (SIMO-OFDM) system, single input single output-orthogonal frequency division multiplexing (SISO-OFDM) system, this paper introduc...
Citations
... Most existing wireless communication technologies have attempted to increase reliability by using signal compensation techniques [8][9][10] or differential techniques 11 . The former relies on channel estimation using a previously known signal, i.e. the pilot signal. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/406164245368833-1473848510264_Q64/Xiao-Zhou-31.jpg)
![[object Object]](https://i1.rgstatic.net/ii/profile.image/272569425199132-1441997023798_Q64/Chengyou-Wang.jpg)
... The OFDM contains various sub-channels and is forwarded via parallel transmissions to maintain the transmissions at a high data rate and increase the symbol duration to fight against ISI. With the help of long CP, OFDM transforms the frequency selective channel into several distinct frequency flat sub-channels with a minimum bit error rate [6]. The orthogonal frequency division multiple access (OFDMA) method contains the synchronization errors at the receiver oscillator employed by the ICI which annihilates the carrier orthogonality. ...
