Channel estimation method for OFDM in low SNR based on two-dimensional spreading

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU108679" target="_blank" >RIV/00216305:26220/14:PU108679 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11277-014-1779-y" target="_blank" >http://dx.doi.org/10.1007/s11277-014-1779-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11277-014-1779-y" target="_blank" >10.1007/s11277-014-1779-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Channel estimation method for OFDM in low SNR based on two-dimensional spreading

Popis výsledku v původním jazyce

In this paper, we present a channel estimation method based on two-dimensional signal spreading applicable to Orthogonal Frequency Multi- ple Access (OFDM) multicarrier systems. Our method exploits a spreading of a transmitted data signal as well as a pilot signal over the assigned fre- quency range and time period. As a spreading sequence we exploited orthog- onal Walsh-Hadamard sequences. When compared with traditional pilot symbol based channel estimation, our method is beneficial in low Signal to Noise Ratio (SNR). For a comparison of our method with state-of-the-art channel estimation method, we utilized an open source LTE downlink simulator developed at TU Vienna. This enables a reproducibility of our results. Considering the LTE system, our method outperforms the traditional approach in typical range of SNR from -5 dB to 10 dB. For a comparison of a throughput performance, a number of channel models has been employed.

Název v anglickém jazyce

Channel estimation method for OFDM in low SNR based on two-dimensional spreading

Popis výsledku anglicky

In this paper, we present a channel estimation method based on two-dimensional signal spreading applicable to Orthogonal Frequency Multi- ple Access (OFDM) multicarrier systems. Our method exploits a spreading of a transmitted data signal as well as a pilot signal over the assigned fre- quency range and time period. As a spreading sequence we exploited orthog- onal Walsh-Hadamard sequences. When compared with traditional pilot symbol based channel estimation, our method is beneficial in low Signal to Noise Ratio (SNR). For a comparison of our method with state-of-the-art channel estimation method, we utilized an open source LTE downlink simulator developed at TU Vienna. This enables a reproducibility of our results. Considering the LTE system, our method outperforms the traditional approach in typical range of SNR from -5 dB to 10 dB. For a comparison of a throughput performance, a number of channel models has been employed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

WIRELESS PERSONAL COMMUNICATIONS

ISSN

0929-6212

e-ISSN

1572-834X

Svazek periodika

2014

Číslo periodika v rámci svazku

78

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

715-728

Kód UT WoS článku

000340470800039

EID výsledku v databázi Scopus

—