Piros: Pushing the Limits of Partially Concurrent Transmission in WiFi Networks

Author

Lu Wang ; Xiaoke Qi ; Jiang Xiao ; Kaishun Wu ; Jin Zhang ; Hamdi, Mounir ; Qian Zhang

Author_Institution

Dept. of Comput. Sci. & Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China

fYear

2015

fDate

June 29 2015-July 2 2015

Firstpage

774

Lastpage

775

Abstract

Partially overlapped channels are barely used for concurrent transmission in WiFi networks, since they lead to collisions where the collided packets cannot be decoded successfully. In this paper, we observe that the actual corrupted symbols by partial-channel interference in OFDM-based WiFi networks are not as severe as we expected. There remains extra coding redundancy that can be exploited from the corrupted symbols, and utilized for packet recovery. Accordingly, we present a novel paradigm termed Piros, in order to Push the lImits of partially concurrent transmission in WiFi networks. Piros strategically leverages the coding redundancy according to the overlap portion in a distributed manner, and extracts useful decoding information from the corrupted symbols to decode the packet with partial-channel interference.

Keywords

OFDM modulation; channel coding; computer network reliability; decoding; modulation coding; network coding; packet radio networks; radiofrequency interference; redundancy; wireless LAN; OFDM-based Wi-Fi network; Piros; coding redundancy; collided packet decoding; packet recovery; partial channel interference; partial overlapped channel; push the limits of partially concurrent transmission; Bit error rate; Decoding; Encoding; IEEE 802.11g Standard; Interference; Redundancy; Coding Redundancy; OFDM Modulation; Partially Overlapped Channel; Symbol Recovery;

fLanguage

English

Publisher

ieee

Conference_Titel

Distributed Computing Systems (ICDCS), 2015 IEEE 35th International Conference on

Conference_Location

Columbus, OH

ISSN

1063-6927

Type

conf

DOI

10.1109/ICDCS.2015.103

Filename

7164981