Title :
Image transmission control over fading channel using SR-ARQ based on DCT frequency and image frame structure
Author :
Yamashina, Masaki ; Tanda, Takeshi ; Yanaka, T.
Author_Institution :
NTT Human Interface Labs., Kanagawa, Japan
Abstract :
This paper proposes a new image transmission control method for fading channels, which uses SR-ARQ based on the DCT frequency and image frame structure. The experimental results gained using a PHS 32 kbit/s digital bearer as the communication channel show that, with some slight image quality degradation, this method can reduce the image transmission time by more 50% at a FER of 2×10-1 compared to conventional SR-ARQ. The experimental results gained by applying the proposed method to moving picture transmission using motion JPEG, show that a QCIF size moving picture can be transmitted at a frame rate of 1.3 frame/sec with some error, and is transmitted at a frame rate of 0.9 frame/sec at a FER of 2×10-1 with 1.5 dB of image quality degradation
Keywords :
automatic repeat request; digital radio; discrete cosine transforms; fading; forward error correction; image coding; image colour analysis; land mobile radio; personal communication networks; transform coding; visual communication; 32 kbit/s; DCT frequency structure; PHS system; QCIF size moving picture; SR-ARQ; color image transmission; communication channel; digital bearer; experimental results; fading channel; image frame structure; image quality degradation; image transmission control; image transmission time reduction; motion JPEG; moving picture transmission; Automatic repeat request; Color; Discrete cosine transforms; Fading; Forward error correction; Frequency; Image coding; Image communication; Image quality; Throughput;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1996. PIMRC'96., Seventh IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
0-7803-3692-5
DOI :
10.1109/PIMRC.1996.568421
