Modulation-mode and power assignment in SVD-equalized MIMO systems | Zendy

Andreas Ahrens | Zendy; Christoph Lange | Zendy

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Modulation-mode and power assignment in SVD-equalized MIMO systems

Author(s) -

Andreas Ahrens,

Christoph Lange

Publication year - 2008

Publication title -

facta universitatis - series electronics and energetics

Language(s) - English

Resource type - Journals

eISSN - 2217-5997

pISSN - 0353-3670

DOI - 10.2298/fuee0802167a

Subject(s) - mimo , computer science , transmitter power output , throughput , bit error rate , power (physics) , transmission (telecommunications) , real time computing , constraint (computer aided design) , algorithm , electronic engineering , telecommunications , channel (broadcasting) , mathematics , wireless , decoding methods , engineering , transmitter , physics , geometry , quantum mechanics

Dedicated to Prof. Reiner Rockmann on occasion of his 70th birt hday Abstract: Existing bit loading and transmit power allocation techniq ues are often optimized for maintaining both a fixed transmit power and a fix ed target bit-error rate while attempting to maximize the overall data-rate. However, delay-critical real-time interactive applications, such as voice or video transmiss ion, may require a fixed data rate. In this contribution the number of activated layers in a multiple input multiple output (MIMO) system and the number of bits per symbol along with the appropriate allocation of the transmit power are jointly optimized unde r the constraint of a given fixed data throughput. Our results show that in order to achie ve the best bit-error rate, not necessarily all MIMO layers have to be activated.

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