Capacity of Quantized AWGN Channel and Optimal Linear Quantization

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2000, Vol. 23 ›› Issue (2): 34-37.

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Capacity of Quantized AWGN Channel and Optimal Linear Quantization

GUO Wen-bin, YANG Hong-wen, LIN Jin-dong, PANG Qin-hua

School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876,China

Received:1999-10-29 Online:2000-03-10

Abstract

Abstract: The channel capacity of quantized AWGN channel and optimal uniform quantization has been studied.Quantization will cause 0～2 dB loss of SNR depends on the quantizer bit number and the quantization step. The performance loss caused by 3 or more bits quantizer can be negligible. We have also found the polynomial to fit the optimal quantization step that can maximize the channel capacity.

Key words: channel capacity, quantization, hard decision, soft decision

CLC Number:

TN911

GUO Wen-bin, YANG Hong-wen, LIN Jin-dong, PANG Qin-hua. Capacity of Quantized AWGN Channel and Optimal Linear Quantization[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2000, 23(2): 34-37.

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Capacity of Quantized AWGN Channel and Optimal Linear Quantization

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