RS decoder architecture for UWB

Sung-Woo Choi, Sang-Sung Choi, Han-ho Lee
2006 2006 8th International Conference Advanced Communication Technology  
UWB is the most spotlighted wireless technology that transmits data at very high rates using low power over a In modem transmitter, Reed-Solomon code is adopted for wide spectrum of frequency band. UWB technology makes it outer code to protect header data from impairment. In Fig. 1 , possible to transmit data at rate over 100Mbps within 10 meters. PHY header, NIAC header and HCS, 17 bytes, are scrambled To preserve important header information, MB-OFDM UWB and encoded using RS(23,17) code and
more » ... sidual 6 parity bytes adopts Reed-Solomon(23,17) code. In receiver, RS decoder needs . T high speed and low latency using efficient hardware. In this are appended. This code enables to correct maximum 3 bytes paper, we suggest the architecture of RS decoder for MB-OFDM error including parity bytes. This RS(23,17) code is shortened UWB. We adopts Modified-Euclidean algorithm for key equa-form of RS(255,249) code. The generator polynomial of tion solver block which is most complex in area. We suggest RS(255,249) is as follows. pipelined processing cell for this block and show the detailed architecture of syndrome, Chien search and Forney algorithm 6 block. At last, we show the hardware implementation results of g(X =J7(x -X6+126X5 +4X4+158X3+58X2+49x+117 ( RS decoder for ASIC implementation.
doi:10.1109/icact.2006.206086 fatcat:n5dc2zewtveineabdc5zqrdg2i