TY - GEN
T1 - Low-precision A/d conversion for maximum information rate in channels with memory
AU - Zeitler, Georg
AU - Singer, Andrew C.
AU - Kramer, Gerhard
PY - 2011
Y1 - 2011
N2 - We consider the discrete-time channel with intersymbol-interference and additive noise under output analog-to-digital conversion (quantization) at the receiver. The analog-to-digital converter is optimized so as to maximize the information rate between the quantized channel output sequence and the channel input sequence, where the input sequence has independent and identically distributed symbols. An upper bound on the information rate is derived. Simulation results demonstrate the effectiveness of the designed quantizers over conventional quantizers at 1-bit/sample precision. The advantage of those quantizers is further emphasized by an example of a channel for which a simple slicer and a carefully optimized channel input with memory fail to achieve a rate of one bit per channel use at high signal-to-noise ratio, in contrast to memoryless binary signaling and an optimized quantizer.
AB - We consider the discrete-time channel with intersymbol-interference and additive noise under output analog-to-digital conversion (quantization) at the receiver. The analog-to-digital converter is optimized so as to maximize the information rate between the quantized channel output sequence and the channel input sequence, where the input sequence has independent and identically distributed symbols. An upper bound on the information rate is derived. Simulation results demonstrate the effectiveness of the designed quantizers over conventional quantizers at 1-bit/sample precision. The advantage of those quantizers is further emphasized by an example of a channel for which a simple slicer and a carefully optimized channel input with memory fail to achieve a rate of one bit per channel use at high signal-to-noise ratio, in contrast to memoryless binary signaling and an optimized quantizer.
UR - https://www.scopus.com/pages/publications/80054821726
U2 - 10.1109/ISIT.2011.6034041
DO - 10.1109/ISIT.2011.6034041
M3 - Conference contribution
AN - SCOPUS:80054821726
SN - 9781457705953
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2602
EP - 2606
BT - 2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2011 IEEE International Symposium on Information Theory, ISIT 2011
Y2 - 31 July 2011 through 5 August 2011
ER -