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The IEEE802.11ac task group has started to establish a next-generation WLAN standard. The wider channel of more than 80 MHz achieving over a 1-Gbps data rate is discussed. We have developed an experimental platform consisting of baseband and RF units in a 2×2 MIMO-OFDM system for the wider channel and evaluated its system performance in a field experiment. A MIMO-OFDM transceiver in the baseband unit...
Wordlength determination is a crucial task in digital hardware implementations for green computing because the wordlength affects power consumption and system performance. Digital hardware requires careful wordlength design for a sufficient dynamic range. Nevertheless, wordlength can be reduced during better conditions. We present a modeling approach for dynamic variable wordlength (DVW) in digital...
Digital circuit designs in sub-threshold region have been studied in recent years. Their works focus on special purpose for some digital applications in low frequency. This paper proposed modeling analysis of each CMOS logic cell operating at sub-threshold region. We explore the delays and power dissipation of logic cell and make scaled factors mapping from typical voltage to sub-threshold voltage...
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