From DC-Biased to DC-Informative Optical OFDM

Abstract

We propose a novel modulation scheme for intensity modulation and direct detection (IM/DD)
based optical communication system employing orthogonal frequency division multiplexing (OFDM).
This method utilizes the DC-bias, which typically is discarded at the receiver-end, to carry information
to achieve higher power efficiency. By formulating and solving a convex optimization problem, a
constellation in high dimensional space is designed of ....etc

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By
JOSHI G



Abstract

The demand for high-speed mobile wireless communications is rapidly growing.
OFDM technology promises to be a key technique for achieving the high data capacity and spectral efficiency requirements for wireless communication systems of the near future. This work presents an investigation into methods for maximizing the spectral efficiency of Orthogonal Frequency Division Multiplexing (OFDM) systems. The current standards such as IEE 802.11a in USA and H ....etc

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sir i want matlab code for pulse shaping techniques in ofdm system ....etc

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To get full information or details of ici reduction in ofdm system please have a look on the pages

http://seminarsprojects.net/Thread-ofdm-project?pid=73629&mode=threaded

if you again feel trouble on ici reduction in ofdm system please reply in that page and ask specific fields in ici reduction in ofdm system ....etc

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matlab code for ici reduction in ofdm system using kalman filter

ABSTRACT

Orthogonal frequency division multiplexing (OFDM) is emerging as preferred modulation scheme in modern high data rate wireless communication systems. A well known problem of OFDM system is sensitivity to frequency offset between the transmitted and received signals, which may be caused by Doppler shift in the channel or by the difference between the transmitter and receiver local oscillator frequencies. This carrier
frequency offset causes loss of orthogonality between ....etc

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I am working with OFDM and I need a matlab code for PAPR reduction using SLM technique. ....etc

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can any1 send the SNR vs BER matlab code of ici reduction using pulse shaping technique..???
its urgent so send me on my mail-
[email protected]

thanking u ....etc

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Hi,
I required ACO and DCO optical OFDM matlab code.Please help ! ....etc

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dear sir , i am studing BE in kongu engineering college .i have to do the prjct on DWT based MIMO-OFDM to improve the bit error rate .i want to know the steps .pls give some steps and matlab code for mimo ofdm. ....etc

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Prepared by:
Khaizuran Abdullah
Zahir M. Hussain


Abstract

Comparative studies on DWT-OFDM and FFTOFDM systems are presented. The model for DWT-OFDM includes zero-padding and vector transpose for transmitting the OFDM signal. MATLAB simulation commands are also described. The discrete wavelet transform-OFDM (DWT-OFDM) has to satisfy the orthonormal bases and the perfect reconstruction properties to be considered as wavelet transform. Different wavelet families have been used and compared with the conventional F ....etc

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