Multi-Mode Wireless Videophony

Hanzo, L and Streit, J (1997) Multi-Mode Wireless Videophony. Journal of the Institute of Image Electronics Engineers of Japan (JIIEEJ), 26, (6), 648-658.


[img] PDF
Download (1185Kb)


A comparative study of arbitrarily programmable, but fixed-rate videophone codecs using quarter common intermediate format (QCIF) video sequences scanned at 10 frames/s is offered. These codecs were designed to allow direct replacement of mobile radio voice codecs in second generation wireless systems, such as the Pan-European GSM, the American IS-54 and IS-95 as well as the Japanese systems, operating at 13, 8, 9.6 and 6.7 kbps, respectively, although better video quality is maintained over higher-rate, 32kbps cordless systems, such as the Japanese PHS and the European DECT and CT2 systems. Best overall performance was achieved by our vector-quantised codecs, followed by the discrete cosine transformed and the quadtree-based schemes, which were characterised by the bit allocation schemes of Table 1. The associated video Peak Signal-to-Noise Ratio (PSNR) was around 30 dB, while the subjective quality can be viewed under A range of multimode wireless transceivers were also proposed, which are characterised by Table 2.

Item Type: Article
Additional Information: Invited Paper Address: Japan
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Southampton Wireless Group
ePrint ID: 251286
Accepted Date and Publication Date:
Date Deposited: 25 Oct 1999
Last Modified: 31 Mar 2016 13:51
Further Information:Google Scholar

Actions (login required)

View Item View Item

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics