منابع مشابه
Performance of low-density parity-check (LDPC) coded OFDM systems
AhtractOrthogonal Frequency Division Multiplexing (OFDM) is a very attractive technique for high-hit-rate data transmission in multipath environments. Many error-correcting codes have been applied to OFDM, convolutional codes, Reed-Solomon codes, Turbo codes, and so on. Recently, low-density parity-check (LDPC) codes have attracted much attention particularly in the tield of coding theory. LDPC...
متن کاملLDPC-coded OFDM in fiber-optics communication systems [Invited]
Low-density parity-check (LDPC) coded orthogonal-frequency-division multiplexing (OFDM) is studied as an efficient coded modulation technique suitable for fiber-optics communication systems. We show that in long-haul fiber optics communications LDPC-coded OFDM increases spectral efficiency and requires simple equalization to deal with chromatic dispersion. LDPC-coded OFDM is also a promising po...
متن کاملAdaptive Modulation for LDPC coded-OFDM based Powerline communication system
As a result of the impairments generated by the consumer electronic devices on power line channel extensive research has been carried out to mitigate the deteriorating effects. In this work the performance of an OFDM based power line communication system is evaluated under OPERA [1] proposed power line channel. An adaptive modulation system is designed and the performance advantages of the syst...
متن کاملImprovement for LDPC Coded OFDM Communication System over Power Line
Power line communication has been around in past decades and gained renewed attention thanks to the demand of high‐speed Internet access. With the significant advantages of existing infrastructure and accessibility to even remote areas, power grid has become one of the promising competitors for multi‐media transmission in household. However, the power line was not oriente...
متن کاملchannel estimation for mimo-ofdm systems
تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...
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ژورنال
عنوان ژورنال: Tsinghua Science and Technology
سال: 2010
ISSN: 1007-0214
DOI: 10.1016/s1007-0214(10)70067-5