doc.: IEEE 802.15-04/140r6 Submission July 2004 Kohno NICT, Welborn Freescale, Mc Laughlin decaWave Slide 18 Comparison of DS-UWB to MB-OFDM Digital Baseband Complexity for PHY Gate count estimates are based on MB-OFDM proposal team methodology detailed in IEEE Document 03/449r2 –Gate counts converted to common clock (85.5 MHz) for comparison Explicit MB-OFDM gates counts have only been reported by proposers for a 110/200 Mbps implementation –Other estimates of MB-OFDM Viterbi decoder and FFT engine are provided in IEEE Document 03/343r0 Estimates for MB-OFDM 480 Mbps mode complexity are based on scaling of FFT engine, equalizer and Viterbi decoder –MB-OFDM estimates of 480 Mbps power available in 03/268r3 –Details available in IEEE Document 04/164r0 Estimates for MB-OFDM 960 Mbps mode details are based on linear scaling of decoder and FFT engine to 960 Mbps –Assumes 6-bit ADC for 16-QAM operation DS-UWB gate estimates are detailed in IEEE Document 03/099r4 –Methodology for estimating complexity of 16-finger rake, equalizer and synchronization blocks are per MB-OFDM methodology
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