presented by:
Rahul Singh
Nafisur Rahman


Intercarrier Interference Compression in OFDM Communication Systems by Using Correlative Coding
1. Orthogonal Frequency Division Multiplexing(OFDM)
1.1 Introduction
Over the past few years , there has been increasing number of users of mobile/movable non wired communication than wired communication system. At present, in addition to voice services only low bit data rate are available to mobile users. The mobile radio channel is characterized by multipath reception ....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 IEEE 802.11a in USA and ....etc

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1 Introduction
Orthogonal frequency division multiplexing (OFDM) is widely used today due to it's robust-
ness to multipath e®ects and e±cient implementation using FFT. The most common one called
OFDM/QAM, which uses QAM as modulation and rectangular pulse as shaping ¯lter. For
OFDM/QAM, the robustness to multipath is attained by inserting guard interval. If the max-
imum delay of transmitting channel is less than guard interval, there exists neither intersymbol
interference (ISI) nor interchannel interference (ICI) . For di ....etc

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sir i need ppt for simulation and bit error rate analysis of 4g ofdm systems by using different modulation schemes like qam,qpsk,bpsk ....etc

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sir

I am doing my proect in ofdm.is it possible for me to provide exact simulink diagram f dwtfft based ofdm
....etc

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Respected sir/mam

I am working on WiMAX Model so required DWT-OFDM Model ....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 ....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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Abstract”
In the presented paper, the principle of frequency domain channel estimation for wireless OFDM systems will be shown. A well known noise reduction technique will be adapted to HIPERLAN/2 and IEEE802.11a standards, and its positive effects will be demonstrated by simulation results. Channel tracking has not been considered by the WLAN standards named above, although it is well known that time-variant indoor radio channels can change their characteristics within one PHY burst. This paper presents some techniques for decision ....etc

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i am looking for dwt based ofdm matlab code please ....etc

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