Low complexity suboptimal monobit receiver for transmitted-reference impulse radio UWB systems - Details

author：

Khani, Hassan (Khani, Hassan.) ^[1] | Nie, Hong (Nie, Hong.) ^[2] | Xiang, Weidong (Xiang, Weidong.) ^[3] | Xu, Zhimeng (Xu, Zhimeng.) ^[4] (Scholars：许志猛) | Chen, Zhizhang (Chen, Zhizhang.) ^[5]

Indexed by：

EI Scopus

Abstract：

In　this　paper,　a　low　complexity　suboptimal　monobit　receiver,　denoted　as　Q-function　estimation　(QFE)　based　monobit　receiver,　is　proposed　for　transmitted-reference　(TR)　based　impulse　radio　(IR)　ultra　wideband　(UWB)　systems　to　mitigate　the　performance　degradation　caused　by　severe　quantization　noise　due　to　employing　monobit　ADCs.　Through　accumulating　reference　samples　over　multiple　blocks,　the　QFE-based　monobit　receiver　can　considerably　reduce　the　noise-on-noise　effect　and　optimize　the　contribution　of　each　sample　to　the　decision　statistic.　Computer　simulations　demonstrate　that　in　both　line-of-sight　(LOS)　and　non-LOS　(NLOS)　channels　the　QFE-based　monobit　weighted　TR　receiver　can　achieve　a　close-to-optimal　bit-error　rate　(BER)　performance　without　requiring　full　channel　state　information.　Furthermore,　because　the　optimal　combining　weights　can　be　obtained　offline　and　saved　into　a　lookup　table,　the　complexity　of　the　proposed　suboptimal　monobit　receiver　is　quite　low.　Therefore,　it　is　considered　as　a　promising　technology　for　IR-UWB　applications　requiring　low　system　complexity　and　low　power　consumption.　©　2012　IEEE.

Keyword：

Analog to digital conversion Bit error rate Broadband networks Channel capacity Channel state information Impulse noise Radio Radio systems Table lookup Ultra-wideband (UWB)

Community：

[ 1 ] [Khani, Hassan]Department of Industrial Technology, University of Northern Iowa, IA 50614-0178, United States
[ 2 ] [Nie, Hong]Department of Industrial Technology, University of Northern Iowa, IA 50614-0178, United States
[ 3 ] [Xiang, Weidong]ECE Department, University of Michigan, Dearborn, MI 48128, United States
[ 4 ] [Xu, Zhimeng]Department of Industrial Technology, University of Northern Iowa, IA 50614-0178, United States
[ 5 ] [Xu, Zhimeng]College of Physics and Information Engineering, Fuzhou University, Fuzhou, China
[ 6 ] [Chen, Zhizhang]ECE Department, Dalhousie University, Halifax, NS, Canada