Collision Recovery for OFDM System over Wireless Channel
نویسندگان
چکیده
منابع مشابه
Collision Recovery for OFDM System over Wireless Channel
SUMMARY We present an effective method of collision recovery for orthogonal frequency division multiplexing (OFDM)-based communications. For the OFDM system, the modulated message data can be demod-ulated using the partial time-domain OFDM signal. Therefore, the partial time-domain signal can be adopted to reconstruct the whole OFDM time-domain signal with estimated channel information. This pr...
متن کاملChannel Estimation in OFDM System over Wireless Channels
In this paper, we investigate channel estimation techniques for wireless receivers. Channel estimation is important for wireless applications because a wireless channel has fading characteristics and time varying impulse response. OFDM is a multi-carrier modulation technique wherein we use a set of orthogonal sub-carriers. OFDM divides the entire frequency band into several sub bands. The sub-c...
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...
Channel Estimation Analysis in MIMO OFDM System over Fading Channel
Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems play a vital role in the channel estimation. The wireless channel suffers from impairments like fading and interference. Technologies that achieved above requirements are Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM). Channel impairments must be mitigated a...
متن کاملOFDM Signal Improvement Using Radio over Fiber for Wireless System
Orthogonal frequency division multiplexing (OFDM) as a modulation technology, it transmit over both wireless and optical channel, and it distribute the data over a large number of subcarrier can be overlapping. It achieved RF signal for the long haul transmission using RoF system. The RoF (Radio over Fiber) system is referred to increase the high orthogonality of the OFDM modulation signal for ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
سال: 2007
ISSN: 0916-8508,1745-1337
DOI: 10.1093/ietfec/e90-a.7.1312