Detail publikace

On Mutual Information of Measured 60 GHz Wideband Indoor MIMO Channels: Time Domain Singular Values

Originální název

On Mutual Information of Measured 60 GHz Wideband Indoor MIMO Channels: Time Domain Singular Values

Anglický název

On Mutual Information of Measured 60 GHz Wideband Indoor MIMO Channels: Time Domain Singular Values

Jazyk

en

Originální abstrakt

This paper presents a report on mutual information based on measured indoor millimeter-wave (mmWave) channels with multiple antennas at input and output (MIMO). We show that for fixed indoor communication systems, an optimal antenna element spacing can be found such that the measured mutual information almost reaches the capacity of a perfectly orthogonal (theoretical) MIMO channel (with the same number of receiver (RX) and transmitter (TX) antennas). Secondly, we present, that even though the measured channel transfer functions (CTFs) exhibit large fluctuations (i.e., temporal dispersion), the mutual information is mainly determined by the mean singular value of the line-of-sight (LOS) components. Due to their strong variations over frequency mmWave channels are tedious when describing them with classical methods in the frequency domain. An approximation by numerous flat subbands leads to an error in mutual information (MI) by 2bit/s/Hz (for 80% probability). In comparison, our proposed method in the time domain, however, offers a notably smaller error (1bit/s/Hz for 80% probability).

Anglický abstrakt

This paper presents a report on mutual information based on measured indoor millimeter-wave (mmWave) channels with multiple antennas at input and output (MIMO). We show that for fixed indoor communication systems, an optimal antenna element spacing can be found such that the measured mutual information almost reaches the capacity of a perfectly orthogonal (theoretical) MIMO channel (with the same number of receiver (RX) and transmitter (TX) antennas). Secondly, we present, that even though the measured channel transfer functions (CTFs) exhibit large fluctuations (i.e., temporal dispersion), the mutual information is mainly determined by the mean singular value of the line-of-sight (LOS) components. Due to their strong variations over frequency mmWave channels are tedious when describing them with classical methods in the frequency domain. An approximation by numerous flat subbands leads to an error in mutual information (MI) by 2bit/s/Hz (for 80% probability). In comparison, our proposed method in the time domain, however, offers a notably smaller error (1bit/s/Hz for 80% probability).

BibTex


@inproceedings{BUT140428,
  author="Jiří {Blumenstein} and Roman {Maršálek} and Tomáš {Götthans} and Ronald {Nissel} and Markus {Rupp}",
  title="On Mutual Information of Measured 60 GHz Wideband Indoor MIMO Channels: Time Domain Singular Values",
  annote="This paper presents a report on mutual information
based on measured indoor millimeter-wave (mmWave) channels
with multiple antennas at input and output (MIMO). We show
that for fixed indoor communication systems, an optimal antenna
element spacing can be found such that the measured mutual
information almost reaches the capacity of a perfectly orthogonal
(theoretical) MIMO channel (with the same number of receiver
(RX) and transmitter (TX) antennas). Secondly, we present, that
even though the measured channel transfer functions (CTFs)
exhibit large fluctuations (i.e., temporal dispersion), the mutual
information is mainly determined by the mean singular value
of the line-of-sight (LOS) components. Due to their strong
variations over frequency mmWave channels are tedious when
describing them with classical methods in the frequency domain.
An approximation by numerous flat subbands leads to an error
in mutual information (MI) by 2bit/s/Hz (for 80% probability). In
comparison, our proposed method in the time domain, however,
offers a notably smaller error (1bit/s/Hz for 80% probability).",
  booktitle="IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017)",
  chapter="140428",
  doi="10.1109/PIMRC.2017.8292754",
  howpublished="electronic, physical medium",
  year="2017",
  month="october",
  pages="1--5",
  type="conference paper"
}