Paper Info
Title
On block noncoherent communication with low-precision phase quantization at the receiver
Abstract
We consider communication over the block noncoherent AWGN channel with low-precision Analog-to-Digital Converters (ADCs) at the receiver. For standard uniform Phase Shift Keying (PSK) modulation, we investigate the performance of a receiver architecture that quantizes only the phase of the received signal; this has the advantage of being implementable without automatic gain control, using multiple 1-bit ADCs preceded by analog multipliers. We study the structure of the transition density of the resulting channel model. Several results, based on the symmetry inherent in the channel, are provided to characterize this transition density. A low complexity procedure for computing the channel capacity is obtained using these results. Numerical capacity computations for QPSK show that 8-bin phase quantization of the received signal recovers more than 80-85% of the capacity attained with unquantized observations, while 12-bin phase quantization recovers above 90-95% of the unquantized capacity. Dithering the constellation is shown to improve the performance in the face of drastic quantization.
Year
DOI
Venue
2009
10.1109/ISIT.2009.5205830
international symposium on information theory
Keywords
DocType
Volume
1-bit adcs,numerical capacity computation,low-precision phase quantization,8-bin phase quantization,unquantized capacity,channel capacity,resulting channel model,drastic quantization,12-bin phase quantization recover,transition density,block noncoherent communication,block noncoherent awgn channel,entropy,communication complexity,automatic gain control,signal to noise ratio,data mining,analog multiplier,phase shift keying,quantization
Conference
abs/0905.4303
Citations 
PageRank 
References 
6
0.73
7
Authors
2
Name
Order
Citations
PageRank
Jaspreet Singh Suri133729.90
Upamanyu Madhow23025293.76