نتایج جستجو برای: ppic

تعداد نتایج: 79  

2002
Yung-Fa Huang Jyh-Horng Wen

The partial parallel interference cancellation (PPIC) scheme can give an optimal IC by adding a partial cancellation weight (PCW) to each interference cancellation path, in which case the PCW is a fraction of one and reflects the reliability of the tentative decision. Then, that the fuzzy-based PPIC (FB-PPIC) outperforms the conventional PIC and constant weight PPIC over flat fading channels ha...

2013
L. NITHYANANDAN

This paper presents an extended version of Partial Parallel Interference Cancellation (PPIC) called Variance reduced Partial Parallel Interference Cancellation (VRPPIC) for multicarrier code division multiple access uplink systems. The combination of PPIC receiver and new bit estimator is called VRPPIC detector. This realization is derived for the main PPIC operation and soft decision (SD) from...

2008
Yung-Fa Huang Tan-Hsu Tan Chia-Hsin Cheng Neng-Chung Wang

In this paper, we describe and evaluate multistage partial parallel interference cancellation (PPIC) multiuser detectors to improve the performance of multi-carrier direct-sequence code-division multiple-access (MC-CDMA) power line communication (PLC) systems over frequency selective fading channels with nonperfect power control. To improve the effectiveness of PPIC, we examined the adequate pa...

2014
Kamal Shahtalebi Gholam Reza Bakhshi Hamidreza Saligheh Rad

Least mean square-partial parallel interference cancelation (LMS-PPIC) is a partial interference cancelation using adaptive multistage structure in which the normalized least mean square (NLMS) adaptive algorithm is engaged to obtain the cancelation weights. The performance of the NLMS algorithm is mostly dependent to its step-size. A fixed and non-optimized step-size causes the propagation of ...

2005
Chin-Liang Wang Chang-Chen Chu

Two kinds of RAKE receiver combining schemes are investigated for a partial parallel interference cancellation (PPIC) technique, including maximal ratio combining (MRC) and minimum mean-squared error (MMSE) combining, in directsequence code-division multiple access (DS-CDMA) ultrawideband (UWB) systems. We use the normalized least meansquared algorithm to approach the MMSE solution for the RAKE...

2014
J. RAVINDRABABU E. V. KRISHNA RAO Y. RAJA RAO

Multi stage Parallel Interference Cancellation (PIC) technique gives good performance compared to Successive Interference Cancellation (SIC) method, but biased decision statistic and complexity problems are raised due to imperfect estimation of Multiple Access Interference (MAI) as number of stages increases. Partial Parallel Interference Cancellation (PPIC) technique is proposed to cancel the ...

2008
Yung-Fa Huang Tan-Hsu Tan Chia-Hsing Cheng Neng-Chung Wang

In this paper, the performance improvement in multi-carrier direct-sequence code-division multiple-access (MC-CDMA) power line communication (PLC) systems using partial parallel interference cancellation (PPIC) multiuser detectors is investigated. The high data rate demanded in the multimedia PLC systems can be offered by the MC-CDMA systems. However, the multiple access interferences (MAIs) ex...

Journal: :Photonics Research 2023

Linear light-processing functions (e.g., routing, splitting, filtering) are key requiring configuration to implement on a programmable photonic integrated circuit (PPIC). In recirculating waveguide meshes (which include loop-backs), this is usually done manually. Some previous results describe explorations perform task automatically, but their efficiency or applicability still limited. paper, w...

2012
Ryosuke Kohno Kenji Hotta Kana Matsubara Shie Nishioka Taeko Matsuura Mitsuhiko Kawashima

When in vivo proton dosimetry is performed with a metal-oxide semiconductor field-effect transistor (MOSFET) detector, the response of the detector depends strongly on the linear energy transfer. The present study reports a practical method to correct the MOSFET response for linear energy transfer dependence by using a simplified Monte Carlo dose calculation method (SMC). A depth-output curve f...

Davoud Afshar, Hamid Kazemian, Mehdi Davari, Mehdi Mahdavi, Mehdi Yaseri, Mohammad Hossein Yazdi, Mohammad Reza Pourmand, Muhammad Ibrahim Getso, Peyman Avakh Majelan, Seyed Davar Siadat,

Background: Among the enterococci strains, Enterococcus faecalis is considered as one of the important nosocomial pathogens affecting immunocompromised patients. In this study, the immunogenicity of PpiC, GelE, and VS87_01105 proteins against enterococcal infection was investigated in a mice model. Methods: The genes encoding these proteins were cloned into pET21a expression vector, and the rec...

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