منابع مشابه
channel 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...
Improved Channel Estimation for DVB-T2 Systems by Utilizing Side Information on OFDM Sparse Channel Estimation
The second generation of digital video broadcasting (DVB-T2) standard utilizes orthogonal frequency division multiplexing (OFDM) system to reduce and to compensate the channel effects by utilizing its estimation. Since wireless channels are inherently sparse, it is possible to utilize sparse representation (SR) methods to estimate the channel. In addition to sparsity feature of the channel, the...
متن کاملPerformance of Channel Estimation Algorithm with Joint Channel Estimation Scheme
In this paper, multi-cell channel estimation algorithm based on successive interference cancellation (SIC).This channel algorithm is also used for Time Division Synchronization Code Division Multiple Access Systems (TD-SCDMA). TD-SCDMA is the country's standard of 3G mobile telecommunication. This reduces the number of users in each timeslot, which reduces the implementation complexity of multi...
متن کاملChannel Estimation with Improved OFDM
ABSTRACT:.In this paper channel estimation for orthogonal frequency division multiplexing (OFDM) is presented. This channel estimation employs two training symbol in combination with polynomial fitting thus to get accurate estimation result. Channel estimation is mainly performed by sending pilot from the transmitter and measuring the pilot at the receiver side. A sufficient amount of pilot nee...
متن کاملBlock-IFDMA - Iterative Channel Estimation Versus Estimation with Interpolation Filters
In this paper, Discrete Fourier Transform (DFT) precoded Orthogonal Frequency Division Multiple Access (OFDM) with block-interleaved subcarrier allocation per user is considered which is denoted as Block Interleaved Frequency Division Multiple Access (B-IFDMA). The BIFDMA parameter design is affected on the one hand by considerations to reduce the energy consumption by entering a micro sleep mo...
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ژورنال
عنوان ژورنال: IEEE Vehicular Technology Magazine
سال: 2010
ISSN: 1556-6072
DOI: 10.1109/mvt.2010.936644