ISI channel equalizers based on the factor graphs for M-QAM signalling M-QAM kipleme icin garpan gizge temelli ISI kanal denklestiriciler

Date

2013-08-05

Author

Sen, Pmar
Gelincik, Samet
Aktas, Tugcan
Yılmaz, Ali Özgür

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

125
views

0
downloads

In this work, we consider two methods especially for high order modulation types, namely the sum-product (SP) and linear minimum mean square error (LMMSE) algorithms, which were previously utilized to equalize the inter-symbol interference (ISI) channel. Techniques for reducing the computational complexity are proposed for the SP-based method. In addition, a new technique for the calculation of the extrinsic information is proposed, which significantly improves the performance in the LMMSE equalizer. The comparison of these proposed techniques is made through simulations carried out under the fading channel assumption

Subject Keywords

Blogs

URI

https://hdl.handle.net/11511/51796

DOI

https://doi.org/10.1109/siu.2013.6531234

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Multi-Point Single-Antenna Sensing Enabled by Wireless Nested Split-Ring Resonator Sensors Ozbey, Burak; ERTÜRK, VAKUR BEHÇET; Kurç, Özgür; ALTINTAŞ, AYHAN; DEMİR, Hilmi Volkan (2016-11-01) In this paper, simultaneous multi-point wireless sensing is proposed and demonstrated via multiple sensors in nested split-ring resonator (NSRR) geometry coupled to a single illuminator antenna. In this passive multi-point sensing system, each probe in the sensor array is assigned a non-overlapping spectral interval for frequency shift in response to local mechanical loading around a unique operating resonance frequency in the band of the antenna. Here, it is shown that the antenna is capable of capturing t...
ISI-free pulse shaping filters for receivers with or without a matched filter Tuncer, Temel Engin (2002-05-17) We present a design procedure to obtain pulse shaping filters which result intersymbol interference (ISI) free transmit signals as well as matched filtered received signals. Such kind of pulse shaping filters presents flexibility in the design of the receiver systems. The design procedure results symmetric filters as opposed to the filters proposed in previous works. Design parameters can be used to trade the stopband attenuation or fast decay in time for doubly ISI-free property. The performance of the fil...
A CMOS visible image sensor array using current mirroring integration readout circuitry Akbay, Selim Sermet; Bircan, A.; Akın, Tayfun (null; 2000-08-30) This paper reports the development of a CMOS visible sensor array using a high performance readout circuit called Current Mirroring Integration (CMI). The sensor element is a photodiode implemented using n-well and p+ -active layers available in any CMOS process. The current generated by optical excitation is mirrored and integrated in an off-pixel capacitor using the CMI readout circuit, which provides high injection efficiency, low input impedance, almost-zero and stable detector bias, and a high dynamic ...
Stochastic Dynamic Programming Based Resource Allocation for Multi Target Tracking for Electronically Steered Antenna Radar Uzun, Caglar; Demirekler, Mübeccel (2015-05-19) In this work, the concept of sensor management is introduced and stochastic dynamic programming based resource allocation approach is proposed to track multi target. The core of this approach is to use Lagrange relaxation for decreasing the state space dimension. By this approximation, the overall problem is separated into components instead of using joint Markov model to optimize large scale stochastic control problem. The aim of this study is to adaptively allocate radar resources in an optimal way in ord...
A Novel Software for Automatic Calibration Factor Measurement of RF Power Sensors Kizilbey, Oguzhan; Arslan, Murat; Bayrak, Yusuf; Çetinkaya, Anıl; Yugruk, Aydin; Danaci, Erkan (2022-01-01) In this letter, a software for calibration factor (CF) measurement of radio frequency (RF) power sensors (PS) by using VNA-based direct comparison transfer method (VBDCTM) was developed on C# platform. Measurements were performed between 10 MHz and 18 GHz frequency range. When the calibration factors calculated with conventional CF measurement method and novel software were compared, a maximum difference of 4.56% was found in the 10 MHz - 18 GHz frequency band. Therefore, the automatic CF measurement softwa...

Citation Formats

P. Sen, S. Gelincik, T. Aktas, and A. Ö. Yılmaz, “ISI channel equalizers based on the factor graphs for M-QAM signalling M-QAM kipleme icin garpan gizge temelli ISI kanal denklestiriciler,” 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51796.