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On the Exact BER of...
On the Exact BER of Bit-Wise Demodulators for One-Dimensional Constellations
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- Ivanov, Mikhail, 1986 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Brännström, Fredrik, 1974 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Alvarado, Alex, 1982 (author)
- University Of Cambridge
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- Agrell, Erik, 1965 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2013
- 2013
- English.
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In: IEEE Transactions on Communications. - 0090-6778 .- 1558-0857. ; 61:4, s. 1450-1459
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Abstract
Subject headings
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- The optimal bit-wise demodulator for M-ary pulse amplitude modulation (PAM) over the additive white Gaussian noise channel is analyzed in terms of uncoded bit-error rate (BER). The BER analysis is based on studying the bit patterns that form a labeling. New closed-form BER expressions for 4-PAM with any labeling are developed. Moreover, closed-form BER expressions for 11 out of 23 possible bit patterns for 8-PAM are presented, which enable us to obtain the BER for 8-PAM with some of the most popular labelings, including the binary reflected Gray code and the natural binary code. Numerical results show that, regardless of the labeling, there is no difference between the optimal demodulator and the symbol-wise demodulator for any BER of practical interest (below 0.1).
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- demodulator
- bit-interleaved coded modulation
- Additive white Gaussian noise channel
- demapper
- LLRs
- pulse-amplitude modulation
- logarithmic likelihood ratio
- uncoded transmission
- binary reflected Gray code
- bit error probability
Publication and Content Type
- art (subject category)
- ref (subject category)
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