A Simple Formula for Noncoherent Capacity in Highly Underspread WSSUS Channel

Yoshio KARASAWA

doi:10.1587/transcom.2017EBT0003

A Simple Formula for Noncoherent Capacity in Highly Underspread WSSUS Channel

Yoshio KARASAWA

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Channel capacity is a useful numerical index not only for grasping the upper limit of the transmission bit rate but also for comparing the abilities of various digital transmission schemes commonly used in radio-wave propagation environments because the channel capacity does not depend on specific communication methods such as modulation/demodulation schemes or error correction schemes. In this paper, modeling of the noncoherent capacity in a highly underspread WSSUS channel is investigated using a new approach. Unlike the conventional method, namely, the information theoretic method, a very straightforward formula can be obtained in a statistical manner. Although the modeling in the present study is carried out using a somewhat less rigorous approach, the result obtained is useful for roughly understanding the channel capacity in doubly selective fading environments. We clarify that the radio wave propagation parameter of the spread factor, which is the product of the Doppler spread and the delay spread, can be related quantitatively to the effective maximum signal-to-interference ratio by a simple formula. Using this model, the physical limit of wireless digital transmission is discussed from a radio wave propagation perspective.

Publication: IEICE TRANSACTIONS on Communications Vol.E101-B No.5 pp.1262-1269

Publication Date: 2018/05/01

Publicized: 2017/11/16

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2017EBT0003

Type of Manuscript: PAPER

Category: Antennas and Propagation

Authors

Yoshio KARASAWA
Univ. Electro-Communications (UEC Tokyo)

Keyword

channel capacity, noncoherent capacity, underspread channel, wideband channel, doubly-selective fading

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Yoshio KARASAWA, "A Simple Formula for Noncoherent Capacity in Highly Underspread WSSUS Channel" in IEICE TRANSACTIONS on Communications, vol. E101-B, no. 5, pp. 1262-1269, May 2018, doi: 10.1587/transcom.2017EBT0003.
Abstract: Channel capacity is a useful numerical index not only for grasping the upper limit of the transmission bit rate but also for comparing the abilities of various digital transmission schemes commonly used in radio-wave propagation environments because the channel capacity does not depend on specific communication methods such as modulation/demodulation schemes or error correction schemes. In this paper, modeling of the noncoherent capacity in a highly underspread WSSUS channel is investigated using a new approach. Unlike the conventional method, namely, the information theoretic method, a very straightforward formula can be obtained in a statistical manner. Although the modeling in the present study is carried out using a somewhat less rigorous approach, the result obtained is useful for roughly understanding the channel capacity in doubly selective fading environments. We clarify that the radio wave propagation parameter of the spread factor, which is the product of the Doppler spread and the delay spread, can be related quantitatively to the effective maximum signal-to-interference ratio by a simple formula. Using this model, the physical limit of wireless digital transmission is discussed from a radio wave propagation perspective.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.2017EBT0003/_p

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@ARTICLE{e101-b_5_1262,
author={Yoshio KARASAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Simple Formula for Noncoherent Capacity in Highly Underspread WSSUS Channel},
year={2018},
volume={E101-B},
number={5},
pages={1262-1269},
abstract={Channel capacity is a useful numerical index not only for grasping the upper limit of the transmission bit rate but also for comparing the abilities of various digital transmission schemes commonly used in radio-wave propagation environments because the channel capacity does not depend on specific communication methods such as modulation/demodulation schemes or error correction schemes. In this paper, modeling of the noncoherent capacity in a highly underspread WSSUS channel is investigated using a new approach. Unlike the conventional method, namely, the information theoretic method, a very straightforward formula can be obtained in a statistical manner. Although the modeling in the present study is carried out using a somewhat less rigorous approach, the result obtained is useful for roughly understanding the channel capacity in doubly selective fading environments. We clarify that the radio wave propagation parameter of the spread factor, which is the product of the Doppler spread and the delay spread, can be related quantitatively to the effective maximum signal-to-interference ratio by a simple formula. Using this model, the physical limit of wireless digital transmission is discussed from a radio wave propagation perspective.},
keywords={},
doi={10.1587/transcom.2017EBT0003},
ISSN={1745-1345},
month={May},}

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TY - JOUR
TI - A Simple Formula for Noncoherent Capacity in Highly Underspread WSSUS Channel
T2 - IEICE TRANSACTIONS on Communications
SP - 1262
EP - 1269
AU - Yoshio KARASAWA
PY - 2018
DO - 10.1587/transcom.2017EBT0003
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2018
AB - Channel capacity is a useful numerical index not only for grasping the upper limit of the transmission bit rate but also for comparing the abilities of various digital transmission schemes commonly used in radio-wave propagation environments because the channel capacity does not depend on specific communication methods such as modulation/demodulation schemes or error correction schemes. In this paper, modeling of the noncoherent capacity in a highly underspread WSSUS channel is investigated using a new approach. Unlike the conventional method, namely, the information theoretic method, a very straightforward formula can be obtained in a statistical manner. Although the modeling in the present study is carried out using a somewhat less rigorous approach, the result obtained is useful for roughly understanding the channel capacity in doubly selective fading environments. We clarify that the radio wave propagation parameter of the spread factor, which is the product of the Doppler spread and the delay spread, can be related quantitatively to the effective maximum signal-to-interference ratio by a simple formula. Using this model, the physical limit of wireless digital transmission is discussed from a radio wave propagation perspective.
ER -