Uneven Power Amplifier Shuffling for Space-Time Line Code Systems | Zendy

Jingon Joung | Zendy; Jihoon Choi | Zendy

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Uneven Power Amplifier Shuffling for Space-Time Line Code Systems

Author(s) -

Jingon Joung,

Jihoon Choi

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2875146

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

In this paper, a novel power amplifier (PA) shuffling method is proposed for a space-time line code (STLC) system with uneven PA gains. The proposed method is composed of pre-shuffling and post-shuffling, which represent the assignment of STLC symbols to PAs and the allocation of PAs to transmit antennas, respectively. Through these shuffling procedures, the proposed scheme matches the larger gain PA to the larger effective channel gain with STLC in order to maximize the STLC decoding signal-to-noise ratio (SNR). A theoretical analysis provides a formula to compute the decoding SNR, and it is shown through numerical simulations that the proposed PA shuffling method can significantly improve the performance of conventional STLC systems, regardless of the channel state information uncertainty, especially when the number of transmit antennas is large.

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