Delay spread properties in a measured massive MIMO system at 2.6 GHz
(2013) 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 p.53-57- Abstract
Massive multiple-input multiple-output (MIMO) systems, where the base station (BS) is equipped with a large number of antennas and the mobile devices have a single antenna, can significantly enhance the system performance. In many wireless systems inter symbol interference (ISI) due to delay dispersion of the channel can dramatically affect the demodulation process of the received signals. Precoding in massive MIMO can reduce or eliminate ISI, while still exploiting the spatial diversity. In this paper, we investigate how much standard linear precoders help the ISI mitigation by shortening the rms delay spread. In order to evaluate the system performance, we measured a massive MIMO channel with 128 antennas at the base station and 36... (More)
Massive multiple-input multiple-output (MIMO) systems, where the base station (BS) is equipped with a large number of antennas and the mobile devices have a single antenna, can significantly enhance the system performance. In many wireless systems inter symbol interference (ISI) due to delay dispersion of the channel can dramatically affect the demodulation process of the received signals. Precoding in massive MIMO can reduce or eliminate ISI, while still exploiting the spatial diversity. In this paper, we investigate how much standard linear precoders help the ISI mitigation by shortening the rms delay spread. In order to evaluate the system performance, we measured a massive MIMO channel with 128 antennas at the base station and 36 users, including 26 line-of-sight and 10 non line-of-sight, each equipped with a single antenna. We also compare the results from the measurements with an independent identically distributed Gaussian channel with an exponentially decaying average power delay profile.
(Less)
- author
- Payami, Sohail and Tufvesson, Fredrik LU
- organization
- publishing date
- 2013
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Large MIMO, Massive MIMO, Matched filter, MMSE, Precoding, Rms delay spread, Zero forcing
- host publication
- IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
- article number
- 6666103
- pages
- 5 pages
- conference name
- 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013
- conference location
- London, United Kingdom
- conference dates
- 2013-09-08 - 2013-09-11
- external identifiers
-
- scopus:84893228434
- ISBN
- 9781467362351
- DOI
- 10.1109/PIMRC.2013.6666103
- language
- English
- LU publication?
- yes
- id
- 87fa4ef3-619f-418a-ab49-3a31742d75f1
- date added to LUP
- 2016-04-22 09:09:07
- date last changed
- 2022-04-16 08:47:19
@inproceedings{87fa4ef3-619f-418a-ab49-3a31742d75f1, abstract = {{<p>Massive multiple-input multiple-output (MIMO) systems, where the base station (BS) is equipped with a large number of antennas and the mobile devices have a single antenna, can significantly enhance the system performance. In many wireless systems inter symbol interference (ISI) due to delay dispersion of the channel can dramatically affect the demodulation process of the received signals. Precoding in massive MIMO can reduce or eliminate ISI, while still exploiting the spatial diversity. In this paper, we investigate how much standard linear precoders help the ISI mitigation by shortening the rms delay spread. In order to evaluate the system performance, we measured a massive MIMO channel with 128 antennas at the base station and 36 users, including 26 line-of-sight and 10 non line-of-sight, each equipped with a single antenna. We also compare the results from the measurements with an independent identically distributed Gaussian channel with an exponentially decaying average power delay profile.</p>}}, author = {{Payami, Sohail and Tufvesson, Fredrik}}, booktitle = {{IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC}}, isbn = {{9781467362351}}, keywords = {{Large MIMO; Massive MIMO; Matched filter; MMSE; Precoding; Rms delay spread; Zero forcing}}, language = {{eng}}, pages = {{53--57}}, title = {{Delay spread properties in a measured massive MIMO system at 2.6 GHz}}, url = {{http://dx.doi.org/10.1109/PIMRC.2013.6666103}}, doi = {{10.1109/PIMRC.2013.6666103}}, year = {{2013}}, }