Title :
An IEEE 802.11g WLAN digital baseband processor using hybrid channel estimation for wireless home A/V receivers
Author :
Lee, Seung-Yerl ; Lee, Sang-Seol ; Kim, Je-Woo ; Chung, Duck-Jin ; Kim, Dong-Sun
Author_Institution :
Sch. of Inf. & Commun. Eng., INHA Univ., Incheon, South Korea
fDate :
8/1/2009 12:00:00 AM
Abstract :
The delivery of digital multimedia data over wireless networks enables many useful consumer applications such as home entertainment. However, there are many performance-related issues associated with the delivery of time-sensitive multimedia content over current wireless communication systems such as those using the IEEE 802.11 standards. Among the most significant issues are the high error rates, because of the media characteristics, and signal attenuation with distance. In this paper, we present a robust digital baseband processor using hybrid channel estimation for wireless home audio-video receivers operating on an IEEE 802.11g wireless local area network (WLAN). The proposed hybrid channel estimation is a combined decision-directed and pilot-assisted method for perfect channel state information (CSI). Experimental results show that the proposed method increases system performance by about 3 dB over the least squares (LS) scheme at 100-ns root mean square (RMS) delay.
Keywords :
channel estimation; home computing; least squares approximations; multimedia communication; radio receivers; wireless LAN; IEEE 802.11 WLAN digital baseband processor; audio-video receivers; consumer applications; digital multimedia data; home entertainment; hybrid channel estimation; least square scheme; perfect channel state information; root mean square delay; signal attenuation; time-sensitive multimedia content; wireless communication systems; wireless home A-V receivers; wireless local area networks; Attenuation; Baseband; Channel estimation; Communication standards; Error analysis; Multimedia systems; Robustness; Wireless LAN; Wireless communication; Wireless networks; IEEE 802.11; Wireless home A/V receiver; adaptive channel estimation; channel state information;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2009.5277986