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The effects of isothiocyanates (ITCs) on microbiological, physicochemical, and sensory properties were investigated in tofu on days 0, 2, 4, 6, 8, and 10 of storage at 10°C. When compared to the control (8.14 logCFU/g), the 200ppm of ITCs (4.40 logCFU/g) effectively retarded the growth of microflora in tofu after 10days of storage. The initial pH slightly declined after 10days of storage, ranging...
To mitigate the asynchronous ICI (inter-cell interference), the CFR (channel frequency response) and SCM (spatial covariance matrix) should be accurately estimated. Therefore, the enhanced asynchronous ICI mitigation scheme which can effectively reduce the estimation error of both CFR and SCM, and improve performance for MIMO (multiple-input multiple-output)-OFDMA (orthogonal frequency division multiple...
In this paper, we propose a coarse and fine frequency synchronization method which is suitable for the 3rd Generation Partnership Project (3GPP) long term evolution (LTE) orthogonal frequency division multiple access (OFDMA) system in time division duplexing (TDD) mode. In general, primary synchronization signal (PSS) correlation based estimation method and cyclic prefix (CP) correlation based tracking...
In 3GPP long term evolution (LTE) system, initial cell search procedure comprises two steps using primary synchronization signal (PSS) and secondary synchronization signal (SSS). This paper presents SSS detection method for second step of initial cell search. In general, coherent detection using estimated channel frequency response (CFR) at PSS is used for SSS detection, but performance degradation...
A precise estimation of SFO (Sampling Frequency Offset) is an important issue in OFDM (Orthogonal Frequency Division Multiplexing) system. However, the conventional method causes serious performance degradation of SFO estimation in low SNR (Signal to Noise Ratio) or large Doppler frequency environment. Therefore, in this paper, we propose a SFO estimation method which can achieve stable operation...
To mitigate the asynchronous ICI (inter-cell interference), SCM (spatial covariance matrix) of the asynchronous ICI plus background noise should be accurately estimated for MIMO-OFDMA (multiple-input multiple-output-orthogonal frequency division multiple access) system. Generally, it is assumed that the SCM of the asynchronous ICI plus background noise is estimated by using training symbols. However,...
To mitigate the asynchronous ICI (Inter-Cell Interference), the CFR (Channel Frequency Response) and SCM (Spatial Covariance Matrix) should be accurately estimated. Therefore, we propose the ML (Maximum Likelihood)-based iterative method which can effectively reduce the estimation error of both CFR and SCM, and improve the performance for OFDMA system such as LTE (3GPP Long Term Evolution).
For T-DMB service, it requires a relay system such as the digital on-channel repeater which is usually called gapfiller to deal with radio wave shadowing region and additional coverage. In this paper, we propose a new architecture of T-DMB gapfiller and algorithms for the proposed architecture.
For T-DMB service, it requires a relay system such as the digital on-channel repeater which is usually called gapflller to deal with radio wave shadowing region and additional coverage. In this paper, we propose a new architecture of T-DMB gapflller and algorithms for the proposed architecture.
In IEEE 802.15.4 LR-WPAN(Low-Rate Wireless Personal Area Network) specification, the frequency offset of 80 ppm on 2.45 GHz band is recommended for low-cost implementation. For robustness to the specified frequency offset, non-coherent detection-based symbol detector algorithm is typically applied in the LR-WPAN receiver modem. However, the noncoherent symbol detector has more performance degradation...
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