Differential space-frequency modulation for MIMO-OFDM systems via a "smooth" logical channel

Weifeng Su; K. J.Ray Liu

doi:10.1109/glocom.2004.1378093

Differential space-frequency modulation for MIMO-OFDM systems via a "smooth" logical channel

Weifeng Su
, K. J.Ray Liu

Department of Electrical Engineering

University of Maryland, College Park

Research output: Contribution to conference › Paper › peer-review

4 Scopus citations

Abstract

In this paper, a differential space-frequency modulation (DSFM) scheme is proposed for MIMO-OFDM systems with assumptions that the channel keeps constant only within each OFDM block, and it may change independently from one OFDM block to another. The transmitted/received signals are differentially en/decoded in the frequency dimension within each OFDM block. The performance of the proposed scheme depends on the channel power delay profile. Moreover, if the statistics of the power delay profile is known at the transmitter, we further propose to permute the channel frequency responses over subcarriers by using the Dijkstra's algorithm to increase the performance of the DSFM scheme. Simulation results show that the DSFM scheme with permutations performs very well for various channel profiles.

Original language	English
Pages	913-917
Number of pages	5
DOIs	https://doi.org/10.1109/glocom.2004.1378093
State	Published - 2004
Event	GLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States Duration: Nov 29 2004 → Dec 3 2004

Conference

Conference	GLOBECOM'04 - IEEE Global Telecommunications Conference
Country/Territory	United States
City	Dallas, TX
Period	11/29/04 → 12/3/04

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10.1109/glocom.2004.1378093

Cite this

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title = "Differential space-frequency modulation for MIMO-OFDM systems via a {"}smooth{"} logical channel",

abstract = "In this paper, a differential space-frequency modulation (DSFM) scheme is proposed for MIMO-OFDM systems with assumptions that the channel keeps constant only within each OFDM block, and it may change independently from one OFDM block to another. The transmitted/received signals are differentially en/decoded in the frequency dimension within each OFDM block. The performance of the proposed scheme depends on the channel power delay profile. Moreover, if the statistics of the power delay profile is known at the transmitter, we further propose to permute the channel frequency responses over subcarriers by using the Dijkstra's algorithm to increase the performance of the DSFM scheme. Simulation results show that the DSFM scheme with permutations performs very well for various channel profiles.",

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doi = "10.1109/glocom.2004.1378093",

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AU - Su, Weifeng

AU - Liu, K. J.Ray

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N2 - In this paper, a differential space-frequency modulation (DSFM) scheme is proposed for MIMO-OFDM systems with assumptions that the channel keeps constant only within each OFDM block, and it may change independently from one OFDM block to another. The transmitted/received signals are differentially en/decoded in the frequency dimension within each OFDM block. The performance of the proposed scheme depends on the channel power delay profile. Moreover, if the statistics of the power delay profile is known at the transmitter, we further propose to permute the channel frequency responses over subcarriers by using the Dijkstra's algorithm to increase the performance of the DSFM scheme. Simulation results show that the DSFM scheme with permutations performs very well for various channel profiles.

AB - In this paper, a differential space-frequency modulation (DSFM) scheme is proposed for MIMO-OFDM systems with assumptions that the channel keeps constant only within each OFDM block, and it may change independently from one OFDM block to another. The transmitted/received signals are differentially en/decoded in the frequency dimension within each OFDM block. The performance of the proposed scheme depends on the channel power delay profile. Moreover, if the statistics of the power delay profile is known at the transmitter, we further propose to permute the channel frequency responses over subcarriers by using the Dijkstra's algorithm to increase the performance of the DSFM scheme. Simulation results show that the DSFM scheme with permutations performs very well for various channel profiles.

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T2 - GLOBECOM'04 - IEEE Global Telecommunications Conference

Y2 - 29 November 2004 through 3 December 2004

ER -

Differential space-frequency modulation for MIMO-OFDM systems via a "smooth" logical channel

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