This paper addresses the broadcast capabilities of WiFi systems transmitting to handheld devices. The analysis includes a comparison of different antennas at the access point (AP) in terms of received signal strength indication (RSSI) for different channel conditions and handset orientations. An H.264 AVC encoder and IP packetisation unit is used to broadcast IP video streams to mobile clients. Measurement and simulation results show that body shadowing and handset orientation can seriously degrade the video quality. The use of dual polarized antennas at the AP is shown to enhance range and video performance. A shadowing and depolarisation margin of around 14dB is required to ensure high quality broadcast reception.
|Translated title of the contribution||Delivering live-action to handheld devices: experimental results and recommendations|
|Title of host publication||International Conference on Consumer Electronics (ICCE), Las Vegas|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||1 - 2|
|Number of pages||2|
|Publication status||Published - Jan 2009|
|Event||International Conference on Consumer Electronics (ICCE) - Las Vegas, United States|
Duration: 1 Jan 2009 → …
|Conference||International Conference on Consumer Electronics (ICCE)|
|Period||1/01/09 → …|
Bibliographical noteRose publication type: Conference contribution
Additional information: With accompanying conference presentation
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