Image transmission takes place as an important research branch in multimedia broadcasting communication systems in
the last decade. Our paper presents image transmission over a FFT-OFDM (Fast Fourier Transform Orthogonal
Frequency Division Multiplexing). The need for encryption techniques increase with the appearance of the expression
which said that our world became small village, and the use of image application such as conference and World Wide
Web which increase rapidly in recent years. Encryption is an effective method for protecting the transmitted data by
converting it into a form being invisible over transmission path and visible in receiver side. This paper presents a new
hybrid encryption technique based on combination of Backer maps and logistic map. This proposed technique aims to
increase PSNR and reduce the noise in the received image. The encryption is done by shuffling the positions of a pixel
image using two dimensional Baker maps then encrypt using XOR operation with logistic map to generate cipher image
over orthogonal frequency multiplexing (OFDM). The encryption approach adopted in this paper is based on chaotic
Baker maps because the encoding and decoding steps in this approach are simple and fast enough for HDTV
applications. The experimental results reveal the superiority of the proposed chaotic based image encryption technique
using two logistic maps and two dimensional Backer map over normal Backer map.
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