Title :
Modulation-mode and power assignment for MIMO-BICM schemes
Author :
Ahrens, Andreas ; Kühn, Volker
Author_Institution :
Univ. of Rostock, Rostock
Abstract :
In this contribution we jointly optimize the number of activated MIMO layers and the number of bits per symbol along with the appropriate allocation of the transmit power under the constraint of a given fixed data throughput and integrity. In analogy to bit-interleaved coded irregular modulation, we introduce a MIMO-BICM scheme, where different signal constellations and mappings were used within a single codeword. EXIT charts are used for analyzing and optimizing the convergence behaviour of the iterative demapping and decoding.
Keywords :
MIMO communication; channel coding; decoding; interleaved codes; iterative methods; modulation coding; EXIT charts; MIMO-BICM schemes; bit-interleaved codes; channel encoding; convergence behaviour; decoding; irregular modulation; iterative demapping; modulation-mode assignment; power assignment; signal constellations; signal mappings; Bandwidth; Constellation diagram; Constraint optimization; Interleaved codes; Iterative decoding; MIMO; Modulation coding; Signal mapping; Throughput; Transmitters;
Conference_Titel :
Smart Antennas, 2008. WSA 2008. International ITG Workshop on
Conference_Location :
Vienna
Print_ISBN :
978-1-4244-1756-8
Electronic_ISBN :
978-1-4244-1757-5
DOI :
10.1109/WSA.2008.4475568
