Increasing the Bandwidth Efficiency in UW-OFDM

Oliver Lang; Carl Böck; Mario Huemer; Christian Hofbauer

doi:10.1109/IEEECONF44664.2019.9048927

Increasing the Bandwidth Efficiency in UW-OFDM

Oliver Lang, Carl Böck, Mario Huemer, Christian Hofbauer

Research output: Conference proceeding/Chapter in Book/Report/ › Conference Paper › peer-review

Abstract

Unique word orthogonal frequency-division multiplexing (UW-OFDM) prevents intersymbol interference by introducing a unique word (UW) at the tail of each symbol. Compared to cyclic prefix (CP)-OFDM, UW-OFDM in general features a better bit error ratio (BER) while having a slightly lower bandwidth efficiency. In this work, the constraints on the UW are weakened, with the dedicated goal to increase the system's bandwidth efficiency. We propose a modification of the so-called non-systematically encoded UW-OFDM scheme that enables an increase of the bandwidth efficiency by around 5%. The effects of the proposed modifications on the BER as well as on several other performance measures are analyzed.

Original language	English
Title of host publication	2019 53rd Asilomar Conference on Signals, Systems, and Computers
Publisher	IEEE Computer Society
Pages	1857-1861
Number of pages	5
ISBN (Print)	978-1-7281-4301-9
DOIs	https://doi.org/10.1109/IEEECONF44664.2019.9048927
Publication status	Published - 6 Nov 2019
Event	2019 53rd Asilomar Conference on Signals, Systems, and Computers - Pacific Grove, CA, USA Duration: 3 Nov 2019 → 6 Nov 2019

Conference

Conference	2019 53rd Asilomar Conference on Signals, Systems, and Computers
Period	3/11/19 → 6/11/19

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10.1109/IEEECONF44664.2019.9048927

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9048927

Cite this

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title = "Increasing the Bandwidth Efficiency in UW-OFDM",

abstract = "Unique word orthogonal frequency-division multiplexing (UW-OFDM) prevents intersymbol interference by introducing a unique word (UW) at the tail of each symbol. Compared to cyclic prefix (CP)-OFDM, UW-OFDM in general features a better bit error ratio (BER) while having a slightly lower bandwidth efficiency. In this work, the constraints on the UW are weakened, with the dedicated goal to increase the system's bandwidth efficiency. We propose a modification of the so-called non-systematically encoded UW-OFDM scheme that enables an increase of the bandwidth efficiency by around 5%. The effects of the proposed modifications on the BER as well as on several other performance measures are analyzed.",

keywords = "Systematics, Bandwidth, OFDM, Generators, Cost function, Distortion, Time-domain analysis",

author = "Oliver Lang and Carl B{\"o}ck and Mario Huemer and Christian Hofbauer",

year = "2019",

month = nov,

day = "6",

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language = "English",

isbn = "978-1-7281-4301-9",

pages = "1857--1861",

booktitle = "2019 53rd Asilomar Conference on Signals, Systems, and Computers",

publisher = "IEEE Computer Society",

address = "United States",

note = "2019 53rd Asilomar Conference on Signals, Systems, and Computers ; Conference date: 03-11-2019 Through 06-11-2019",

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TY - GEN

T1 - Increasing the Bandwidth Efficiency in UW-OFDM

AU - Lang, Oliver

AU - Böck, Carl

AU - Huemer, Mario

AU - Hofbauer, Christian

PY - 2019/11/6

Y1 - 2019/11/6

N2 - Unique word orthogonal frequency-division multiplexing (UW-OFDM) prevents intersymbol interference by introducing a unique word (UW) at the tail of each symbol. Compared to cyclic prefix (CP)-OFDM, UW-OFDM in general features a better bit error ratio (BER) while having a slightly lower bandwidth efficiency. In this work, the constraints on the UW are weakened, with the dedicated goal to increase the system's bandwidth efficiency. We propose a modification of the so-called non-systematically encoded UW-OFDM scheme that enables an increase of the bandwidth efficiency by around 5%. The effects of the proposed modifications on the BER as well as on several other performance measures are analyzed.

AB - Unique word orthogonal frequency-division multiplexing (UW-OFDM) prevents intersymbol interference by introducing a unique word (UW) at the tail of each symbol. Compared to cyclic prefix (CP)-OFDM, UW-OFDM in general features a better bit error ratio (BER) while having a slightly lower bandwidth efficiency. In this work, the constraints on the UW are weakened, with the dedicated goal to increase the system's bandwidth efficiency. We propose a modification of the so-called non-systematically encoded UW-OFDM scheme that enables an increase of the bandwidth efficiency by around 5%. The effects of the proposed modifications on the BER as well as on several other performance measures are analyzed.

KW - Systematics

KW - Bandwidth

KW - OFDM

KW - Generators

KW - Cost function

KW - Distortion

KW - Time-domain analysis

UR - https://ieeexplore.ieee.org/document/9048927/

U2 - 10.1109/IEEECONF44664.2019.9048927

DO - 10.1109/IEEECONF44664.2019.9048927

M3 - Conference Paper

SN - 978-1-7281-4301-9

SP - 1857

EP - 1861

BT - 2019 53rd Asilomar Conference on Signals, Systems, and Computers

PB - IEEE Computer Society

T2 - 2019 53rd Asilomar Conference on Signals, Systems, and Computers

Y2 - 3 November 2019 through 6 November 2019

ER -

Increasing the Bandwidth Efficiency in UW-OFDM

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