On time‐varying cyclic delay diversity

Richter, G.; Bossert, Martin; Costa, E.; Weckerle, M.

doi:10.1002/ett.1124

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…This approach can be found in [8]. A further approach, which introduces time variance is presented in [9]. Here, the authors propose to choose the cyclic delays randomly.…”

Section: A Time-variant Cddmentioning

confidence: 97%

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Cyclic Delay Diversity - A Simple, Flexible and Effective Multi-Antenna Technology for OFDM

Dammann

Plass

Sand

2008

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications

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We recall the principles of cyclic delay diversity (CDD) and discuss the properties and impact of this transmit antenna diversity technology. Different applications motivate variations of the CDD principle. This variants are briefly introduced and discussed. We show the application to several types of wireless systems, in particular terrestrial digital video broadcasting, cellular mobile radio communications systems and a wireless communications system using adaptive bit loading. Simulation results show the benefits of CDD for these kind of systems.

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“…This approach can be found in [8]. A further approach, which introduces time variance is presented in [9]. Here, the authors propose to choose the cyclic delays randomly.…”

Section: A Time-variant Cddmentioning

confidence: 97%

“…(9) shows that the correlation function can be separated into two factors, where the first factor Φ CDD (q) depends on the cyclic delays δ cyc i and the second one (Φ CH (q)) consists of channel related parameters, in particular the power delay profile σ 2 k , k = 0, . .…”

Section: +N ( ) (5)mentioning

confidence: 99%

Cyclic Delay Diversity - A Simple, Flexible and Effective Multi-Antenna Technology for OFDM

Dammann

Plass

Sand

2008

2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications

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“…This approach can be found in Reference [13]. A further approach, which introduces time variance is presented in Reference [14]. Here, the authors propose to choose the cyclic delays randomly.…”

Section: Time-variant Cddmentioning

confidence: 97%

Benefits, variants and applications of cyclic delay diversity

Dammann

Plass

Sand

et al. 2008

Trans Emerging Tel Tech

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SUMMARYCyclic delay diversity (CDD) is a simple multiple antenna technology which provides additional diversity in Rayleigh fading channels, and therefore, improves the system performance. We recall the principles of CDD and discuss the properties and impact of this transmit (TX) antenna diversity technology. Different applications motivate variations of the CDD principle. This variants are briefly introduced and discussed. We show the application to several types of wireless systems, in particular terrestrial digital video broadcasting, cellular mobile radio communications systems and a wireless communications system using adaptive bit loading (ABL). Simulation results highlight the benefits of CDD for these kind of systems.

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“…In contrast to space-time codes, CDD introduces no additional effort at the receiver side, since CDD changes only the channel impulse response seen by the receiver by increasing the frequency selectivity. Furthermore, CDD has the advantage that there is no rate loss even for more than two transmit antennas [13]. Then Choi et al introduce the RCDD technology to the multirelay cooperative communication system, which does not require additional information in order to coordinate relay transmission and retransmits randomly cyclic-shifted sequences of the received symbol at relays.…”

mentioning

confidence: 99%

Distributed Space-Time-Frequency Cooperative Transmission Scheme for Bidirectional Multi-Relay Communication Networks

Xu¹,

Ni²,

Zhao³

et al. 2016

JCM

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Index Terms-Distributed, adaptive forwarding factor, randomized cyclic delay diversity I. INTRODUCTION At present, the network topology in the field of cooperative communication, which is used to realize the data transmission, is becoming more and more perfect. However, the existing relay communication system is a half-duplex communication mode and works in the oneway transmission mode, although it improves the system's wireless performance, but at the expense of the spectral efficiency. In order to improve the spectrum utilization, Shannon had proposed two-way cooperative relay transmission mechanism in the 1960s. This mechanism needs only two slots to complete the bidirectional communication, which can improve the system spectrum utilization and network throughput in a large extent. Wireless bidirectional cooperative relay technology provides efficient data communication for the cellular mobile networks and wireless sensor networks Manuscript

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On time‐varying cyclic delay diversity

Cited by 6 publications

References 5 publications

Cyclic Delay Diversity - A Simple, Flexible and Effective Multi-Antenna Technology for OFDM

Cyclic Delay Diversity - A Simple, Flexible and Effective Multi-Antenna Technology for OFDM

Benefits, variants and applications of cyclic delay diversity

Distributed Space-Time-Frequency Cooperative Transmission Scheme for Bidirectional Multi-Relay Communication Networks

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