Title :
Multi-priority video partitioning for CDMA based communication systems
Author :
Ramakrishnan, K. ; Namuduri, K.R. ; Jayaweera, S.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wichita State Univ., KS, USA
Abstract :
Third generation wireless systems based on wide band code division multiple access (W-CDMA) are expected to support variable data rates for multimedia services by employing orthogonal variable spreading factor (OVSF) codes. Dual priority video transmission scheme using discrete cosine transform (DCT) was proposed by Gharavi and Alamouti (October, 1999). In this paper, we propose a multi-priority video partitioning scheme to enhance the multimedia capabilities of CDMA based systems using discrete wavelet transform (DWT). The multiple video streams generated by the wavelet transform are transmitted over the wireless channel. The performance of the proposed video partitioning scheme is evaluated and compared with the performance of the DCT based partitioning scheme [Hamid Ghavari and Siavash M. Alamouti, October 1999].
Keywords :
3G mobile communication; broadband networks; code division multiple access; discrete wavelet transforms; multimedia communication; telecommunication channels; transform coding; video coding; visual communication; CDMA based communication systems; discrete cosine transform; discrete wavelet transform; multi-priority video partitioning scheme; multiple video streams; orthogonal variable spreading factor codes; third generation wireless systems; variable data rates; wide band code division multiple access; wireless channel; Discrete cosine transforms; Discrete wavelet transforms; Error correction codes; Image reconstruction; Multiaccess communication; Multimedia systems; Multiresolution analysis; Signal resolution; Streaming media; Wideband;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th
Print_ISBN :
0-7803-7954-3
DOI :
10.1109/VETECF.2003.1286335
