This paper presents simulation results for the transmission of unicast MAC frames over 802.11a/g. Fading channel models at various Doppler spreads are developed to generate time-correlated SNR waveforms. These are used in a bit accurate MAC/PHY simulator to estimate frame loss rate, transmission delay, jitter and throughput for a steady flow of transmit frames. Time-correlated channels are required to correctly simulate the bursty nature of packet loss in a wireless channel. The Doppler spread is shown to have a strong effect on the performance of 802.11 ARQ at the MAC layer. Compared to the slow fading case, in a fast fading channel fewer MAC layer retransmissions are required and the end-to-end delay is significantly reduced. Under poor channel conditions the simulated delay and frame loss rate are seriously underestimated if time-uncorrelated fading is assumed.
|Translated title of the contribution||Frame Delay, Loss Rate and Throughput Analysis for Video Applications over time correlated 802.11a/g channels|
|Title of host publication||IEEE International Conference on Signal Processing and Communications, 2007, ICSPC 2007|
|Place of Publication||Dubai|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||408 - 411|
|Number of pages||4|
|Publication status||Published - 24 Nov 2007|
|Event||International Conference on Signal Processing and Communications - Dubai, United Arab Emirates|
Duration: 1 Nov 2007 → …
|Conference||International Conference on Signal Processing and Communications|
|Country||United Arab Emirates|
|Period||1/11/07 → …|
Bibliographical noteRose publication type: Conference contribution
Sponsorship: This work was partly funded by the Department of Trade and
Industry (DTI UK), Technology Programme project,
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- WLAN IEEE 802.11a/g
- multimedia communication
- video streaming
- fading channels