Title :
Combined source-channel coding for the transmission of still images over a code division multiple access (CDMA) channel
Author :
Iun, E.V.H. ; Khandani, A.K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
fDate :
6/1/1998 12:00:00 AM
Abstract :
This letter considers a combined source-channel coding scheme for image transmission over the uplink of a wireless IS-95 code division multiple access (CDMA) channel using discrete cosine transform. By adjusting the dimension of the orthogonal signaling scheme, we trade the system error-correction capability for a faster bit rate. The increase in channel error is relieved by employing a set of quantizers which are designed using a joint source-channel optimization algorithm.
Keywords :
cellular radio; channel coding; code division multiple access; discrete cosine transforms; error correction codes; image coding; integer programming; optimisation; source coding; transform coding; visual communication; CDMA channel; IS-95 cellular radio; code division multiple access; combined source-channel coding scheme; discrete cosine transform; error-correction capability; image transmission; joint source-channel optimization algorithm; orthogonal signaling scheme; quantizers; still images; uplink; wireless channel; Bit rate; Convolutional codes; Design optimization; Discrete cosine transforms; Frequency; Image coding; Image reconstruction; Linear programming; Multiaccess communication; Quantization;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.681361
