GLR test for OFDM system identification using pilot tones pattern

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cognitive OFDM system detection using pilot tones second and third-order cyclostationarity

The emerging trend to provide users with ubiquitous seamless wireless access leads to the development of multi-mode terminals able to smartly switch between heterogeneous wireless networks. This switching process known as vertical handoff requires the terminal to first detect the surrounding networks it is compatible with. In the context where these networks are cognitive, this can be challengi...

متن کامل

Proposed Pilot Pattern Methods for Improvement DVB-T System Performance

Recently, orthogonal frequency division multiplexing (OFDM) has been extensively used in communications systems to resist channel impairments in frequency selective channels. OFDM is a multicarrier transmission technology in wireless environment that use a large number of orthogonal subcarriers to transmit information. OFDM is one of the most important blocks in digital video broadcast-terrestr...

متن کامل

A New Approach for Increasing Energy Efficiency of OFDM-CDMA System with Pilot Tones

In this paper, incorporation of MISO concept is proposed as a solution for increasing energy efficiency and improving BER performance of OFDMCDMA downlink system with pilot tone and threshold detection combining (optimum TDC). The new presented system with MISO included uses spacetime block coding applied to two, three and four transmit antennas. BER (Bit Error Rate) performance in the case of ...

متن کامل

A Synchronization and Cell Searching Technique Using Pilot Tones for OFDM Cellular Systems

In this letter, a pilot structure and an efficient algorithm for downlink synchronization and cell searching in OFDM-based cellular systems are proposed. The pilots, randomly allocated in the frequency domain, allow us to minimize inter-cell interference (ICI) as well as to increase cell searching capability, estimation range of integer carrier frequency offset (CFO), and estimation accuracy of...

متن کامل

Doppler Estimators Using Pilot Tones for Ofdm Communication Signal in Shallow Water Environment

Underwater acoustic communications constitute a very difficult issue since the transmission channel is severely doubly dispersive. Indeed, radio waves suffer from strong attenuation so that the only solution is to use acoustical modems. Thus, achievable bandpass is very reduced (typically less than 20kHz) and narrowband signal approximation cannot be assumed since sound velocity is around 1500 ...

متن کامل

ذخیره 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: EURASIP Journal on Wireless Communications and Networking

سال: 2013

ISSN: 1687-1499

DOI: 10.1186/1687-1499-2013-72