Duangsuwan, Sarun
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Duangsuwan, Sarun
Alternative Name
Duangsuwan, S.
Main Affiliation
Email
sarun.du@kmitl.ac.th
16 results
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Item type:Publication, Detection of data symbol in a massive MIMO systems for 5G wireless communication(2017-10-19); The massive MIMO technique has played the most important role in 5G wireless communication. It is anticipated that the new techniques employed in massive MIMO will not only improve peak service data rates significantly, but also enhance capacity, coverage, low-latency, efficiency flexibility, compatibility and convergence, thus meeting the focusing demands imposed by optimal detection. This paper presents the optimal detection of data symbol in massive MIMO for 5G wireless communication. Based on the frequency non-selective fading MIMO channel, we consider three difference detectors for recovering the transmitted data symbols and evaluate their performance for Rayleigh fading and additive white Gaussian noise (AWGN). At the results, we show that the probability of error rate (PER) performance of the detectors are significantly discussed. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Multipath interference cancellation in multiantenna system with blind channel estimation method(2017-01-18); This paper describes on evaluating performance of blind channel estimation methods to cancel the multipath interference from a severity of channel measurement. The proposed methods are considered in an optimal receiver behind the multiantenna system that provides by approaching a zero-forcing (ZF) and minimum mean square error (MMSE) based on the blind signal processing techniques. In this paper, we measured the 4 × 4 MIMO calibration kit with 2.45 GHz sleeve monopole array antennas and employed a vector network analyzer (VNA) to make of channel sounding. The measurement results after data processing is demonstrated by a realistic received signal and we point out how to evaluate the multipath interference with the proposed methods. For the MIMO multiantenna system, we guarantee that the proposed blind channel estimation methods helps to cancel the multipath fading channel and maintains an uncertainty of receiving signals in multiantenna system as perfectly. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Experimental evaluation of received signal using blind channel estimation for RFID system via MIMO antenna(2014-01-01); In this paper, we investigate an evaluation of the received signal by using blind channel estimation for radio frequency identification (RFID) system via multiple input multiple output (MIMO) antenna. This method is based on higher order statistic of the received signal to estimate the ambiguity of MIMO antenna. The advantage of blind channel estimation is shown that to achieve the severe of multipath interference, when employed the zero-forcing (ZF) and the minimum mean square error (MMSE) at the receiver. The measurement result is illustrated that the signal verified and estimated of the received signal have been compared. This technique is a novel of signal processing on designing of RFID reader based on MIMO antenna will be utilized. © 2014 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Analysis of Bottomside Thickness Parameter-Based TEC at Equatorial and Low Latitude Stations for Global Navigation Satellite Systems(2018-07-02); ; Tangtrakunphaisan, UdomsitThis paper studies the total electron content (TEC) at equatorial and low latitude stations which is computed using an equation of bottomside thickness parameter with correction factor (B2botP-new) during the solar maximum of 24th solar cycle. The computed TEC is used to compute the ionospheric time delay subsequent-tially. The ionospheric stations in this work include Ramey, Ascension Island, and Jicamarca. The results show that the diurnal and seasonal variations of B2botP-new have the same trends as that of B0-obs as well as the B2botP-new values are close to the BO-obs values clearly for all three stations. The electron density diffuses from the equator toward the EIA region (15°N and 15°S) during the period of 14-23 LT. The proposed TEC (TEC-P) are computed using the B2botP-new, and then the ionospheric delay is also computed using the TEC-P. The computed TEC-P and Id-P are close to the TEC-obs and Id-obs, but they should be further studied for a solar cycle (11 years). - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Quantitative Measurement of Path Loss Model Adaptation Using the Least Squares Method in an Urban DVB-T2 System(2018-01-01); ; The aim of this paper was to propose quantitative measurement of path loss model adaptation in urban radio propagation for a second-generation, terrestrial digital video broadcasting standard (DVB-T2) system. The measurement data was analyzed using data processing based on the least squares (LS) method to verify the probabilistic quantitation of realistic data measurement such as mean error (ME), root mean square error (RMSE), and standard deviation of error (SD), as well as relative error (RE). To distinguish the experimental evaluation, the researchers compared between the conventional Hata path loss model and the proposed model. The result showed that path loss based on the proposed model was more accurate in predicting the quantitative measurement of propagation data properly. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Performance Analysis of Power Outage Probability for Drone based IoT Connectivity Network(2019-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Performance Comparison of OFDM-QAM and FBMC-QAM Filtered in Multi-User Massive MIMO Channel Characterization(2018-07-02) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Study of Air Pollution Smart Sensors LPWAN via NB-IoT for Thailand Smart Cities 4.0(2018-08-06); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, SINR performance using MIMO-CMA algorithms for RFID 2.45 GHz channel measurement(2015-04-22); This paper improves a degradation of signal-to-interference plus noise (SINR) performance for the multipath interference in radio frequency identification (RFID) channel. By using a multiple input multiple output-constant modulus algorithm (MIMO-CMA), a zero-forcing (ZF) and a minimum mean square error (MMSE) criterion is resolved by the conventional CMA, supervised (S-CMA) and variable step size (VSS-CMA). Therefore, the MIMO-CMA algorithms are carried out by the computer simulation and measured data. Our results confirmed that the SINR performance can be improved by using MIMO-CMA algorithms for RFID channel as a simplicity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A RFID reader suppressive interferences due to multipath(2012-11-12); Theradio-frequency identification(RFID)are growingrapidly, especially at 2.45 GHz that is very high speed transmission for toll collection. In addition, there are many problems from the effects of interference due to multipath fading, which leading to bandwidth limitation and channel distortion. Consequently, the rapidly signal processing of RFID reader could be still lacks the demands on improvement. The interference cancelation is proposed by using the blind filtering equalization on previously. In this paper, we proposed the suppressive interfering due to multipath rician fading chanenl based on the successive interference cancellation (SIC) technique for improve the convergence of the constant modulus (CM) algorithm. Also as the result, the quantitative evaluation of mitigate interferences are shown.