M-ary amplitude phase shift keying (APSK) demodulation
Communications Toolbox / Modulation / Digital Baseband Modulation / APM
The M-APSK Demodulator Baseband block demodulates a baseband representation of an M-ary amplitude phase shift keying (APSK) modulated signal. M is the Modulation Order for M-APSK. For a description of M-APSK demodulation, see APSK Hard Demodulation and APSK Soft Demodulation.
Note
M-APSK Demodulator Baseband specifically applies to multiple ring PSK constellations. For a single ring PSK constellation, use M-PSK Demodulator Baseband.
This icon shows the block with all ports enabled:
Data Types |
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Multidimensional Signals |
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Variable-Size Signals |
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For faster execution of the M-APSK Demodulator Baseband block, set the Simulate using parameter to:
Code generation
when using hard
decision demodulation.
Interpreted execution
when using soft
decision demodulation.
[1] Sebesta, J. “Efficient Method for APSK Demodulation.” Selected Topics on Applied Mathematics, Circuits, Systems, and Signals (P. Pardalos, N. Mastorakis, V. Mladenov, and Z. Bojkovic, eds.). Vouliagmeni, Athens, Greece: WSEAS Press, 2009.
[2] Liu, Z., Q. Xie, K. Peng, and Z. Yang. "APSK Constellation with Gray Mapping." IEEE Communications Letters. Vol. 15, Number 12, December 2011, pp. 1271–1273.