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Proceedings Paper

Approaches to wireless transmission of low-bit-rate video
Author(s): Paul Mermelstein; Masoud R. K. Khansari
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Paper Abstract

We consider the organization of the information in video sequences for transmission over an integrated wireless access network carrying a wide variety of services at different bit rates. The access network employs direct-sequence code-division multiple access at bandwidths of 5 or 15 MHz. Video calls at 64 kb/s or voice calls at a peak rate of 8 kb/s are admitted on demand depending on the existing interference profile within a cell and its neighborhood. The transmission of QCIF resolution video sequences at 10 frames/sec has been simulated. The video information is packetized into two priority layers, a high priority layer and a discardable enhancement layer. In addition to FEC, we employ an ARQ protocol with retransmission time-out set at 1 frame interval or 100 ms. With transmission power appropriate to bit error rates of 10-4, picture loss rates of less than one per hour can be achieved.

Paper Details

Date Published: 8 January 1996
PDF: 8 pages
Proc. SPIE 2602, Wireless Technologies and Services for Cellular and Personal Communication Services, (8 January 1996); doi: 10.1117/12.229468
Show Author Affiliations
Paul Mermelstein, INRS-Telecommunications (Canada)
Masoud R. K. Khansari, INRS-Telecommunications (Canada)

Published in SPIE Proceedings Vol. 2602:
Wireless Technologies and Services for Cellular and Personal Communication Services
Eileen McGrath-Hadwen; Howard S. Babbitt; Michael L. Gulledge; James Madsen, Editor(s)

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