Title :
Interference mitigation for simultaneous operating piconets in MB-OFDM systems
Author :
Huang, Chih-Yao ; Chang, Li-Chung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
The multi-band orthogonal frequency division multiplexing (MB-OFDM) is an ultra wideband (UWB) technology that can transmit information at the maximum data rate of 480 Mb/s. When the simultaneous operating piconets (SOP) are located closely, the symbol collisions are expected to occur among the symbols transmitted over the same sub-band at the same time. This interference will decrease throughputs and increase the error rate of the UWB system. We propose an interference mitigation method that changes the time-frequency code (TFC) number of transmitter for the desired piconet according to the packet error rate (PER) of the two TFCs colliding. This proposed method can reduce the symbol collisions of SOP interference effectively.
Keywords :
OFDM modulation; codes; error statistics; interference suppression; personal area networks; ultra wideband communication; MB-OFDM systems; UWB system; bit rate 480 Mbit/s; interference mitigation; multiband orthogonal frequency division multiplexing; packet error rate; simultaneous operating piconets; symbol collisions; time-frequency code; ultra wideband technology; Bandwidth; Collision mitigation; Error analysis; FCC; Interference; OFDM; Personal area networks; Radio transmitters; Time frequency analysis; Ultra wideband technology; MB-OFDM; SOP; UWB;
Conference_Titel :
Information, Communications and Signal Processing, 2009. ICICS 2009. 7th International Conference on
Conference_Location :
Macau
Print_ISBN :
978-1-4244-4656-8
Electronic_ISBN :
978-1-4244-4657-5
DOI :
10.1109/ICICS.2009.5397567
