A report on activities on and around OFDM
Summary :
Table of Contents
- Abstract
- Introduction
- Multi path effect on high speed serial communication
- OFDM implementation description using DFT
- Transmitter implementation
- Orthogonality concept
- Receiver implementation
- Block diagram of OFDM system
- Guard interval concept
- Quality improvement techniques
- Conclusion and future work
- References
Abstract
Multi-carrier communications are currently in a state of very rapid development, both in the introduction of new techniques and in its application to a wide variety of channels and services. Orthogonal Frequency-Division Multiplexing (ofdm) is a bandwidth-efficient signaling scheme for wideband digital communications. With the development of modern digital signal processing technology, ofdm has become practical to implement and has been proposed as an efficient modulation scheme for applications ranging from modems, digital audio broadcast, to next-generation high-speed wireless data communications-WLAN. ofdm supports high data rate transmission which is otherwise limited by phenomena called inter-symbol interference (ISI) in the communication medium between transmitter and the receiver, The main aim of the paper is to discuss valuable components of the orthogonal frequency division multiplexing. A part of it is, use of guard insertion which further reduces effect of multipath, is described in this paper.
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