Class of binary sequences with zero correlationzone

Fan, Pingzhi; Suehiro, N.; Kuroyanagi, Noriyoshi; Deng, Xiangtian

doi:10.1049/el:19990567

Cited by 318 publications

(122 citation statements)

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“…Without loss of generality, we assume , . Let denote a second-order Hadamard matrix (5) Let denote Kronecker product operation, we have sequences of length 2NP as (6). It can be proved that the even shifted ACF sidelobes and CCFs of and are zeros when .…”

Section: Generalized Even Shift Orthogonal-like Sequencesmentioning

confidence: 99%

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Generalized Pairwise Z-Complementary Codes

Feng

Fan

Tang

et al. 2008

IEEE Signal Process. Lett.

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Abstract-An approach to generate generalized pairwise Z-complementary (GPZ) codes, which works in pairs in order to offer a zero correlation zone (ZCZ) in the vicinity of zero phase shift and fit extremely well in power efficient quadrature carrier modems, is introduced in this letter. Each GPZ code has MK sequences, each of length 4NK, where M is the number of Z-complementary mates, K is a factor to perform Walsh-Hadamard expansions, and N is the sequence length of the Z-complementary code. The proposed GPZ codes include the generalized pairwise complementary (GPC) codes as special cases.

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Section: Generalized Even Shift Orthogonal-like Sequencesmentioning

confidence: 99%

“…It has been shown in [5] that a unitary code set can never give ideal cross-correlation and autocorrelation properties. In other words, interference-free windows (IFWs) or ZCZ for any unitary codes will never be equal to its code length.…”

mentioning

confidence: 99%

Generalized Pairwise Z-Complementary Codes

Feng

Fan

Tang

et al. 2008

IEEE Signal Process. Lett.

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“…Therefore, sequences with good autocorrelation and cross-correlation functions play an important role in the design of CDMA systems. Sets of sequences having ideal correlation properties, impulse-like autocorrelation, and zero cross-correlation functions in a specified zone are called zero-correlation zone (ZCZ) sequences [1]. ZCZ codes have been employed in diverse wireless systems, such as sonar sensor network, multiple input multiple output, orthogonal frequency division multiplexing, local positioning systems, and ultrasonic imaging [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A ternary zero-correlation zone sequence sets construction procedure

Addad¹,

Djebbari²

2017

Turk J Elec Eng & Comp Sci

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“…Meanwhile, a simple iterative reconstruction method is employed to compensate the distortion at the DN. Secondly, we derive a couple of optimal zero-correlation zone (ZCZ) relay-assisted sequences designed to eliminate the MAI and minimize the MSE when estimating the secondhop (R 1 −D, R 2 −D) channel [20,21]. At the DN, the received signals from each relay node are combined to achieve spatial diversity and enhance data reliability.…”

Section: Introductionmentioning

confidence: 99%

Individual Channel Estimation in a Diamond Relay Network Using Relay-Assisted Training

He¹,

Dou²,

Gao³

2017

International Journal of Digital Multimedia Broadcasting

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We consider the training design and channel estimation in the amplify-and-forward (AF) diamond relay network. Our strategy is to transmit the source training in time-multiplexing (TM) mode while each relay node superimposes its own relay training over the amplified received data signal without bandwidth expansion. The principal challenge is to obtain accurate channel state information (CSI) of second-hop link due to the multiaccess interference (MAI) and cooperative data interference (CDI). To maintain the orthogonality between data and training, a modified relay-assisted training scheme is proposed to migrate the CDI, where some of the cooperative data at the relay are discarded to accommodate relay training. Meanwhile, a couple of optimal zero-correlation zone (ZCZ) relay-assisted sequences are designed to avoid MAI. At the destination node, the received signals from the two relay nodes are combined to achieve spatial diversity and enhanced data reliability. The simulation results are presented to validate the performance of the proposed schemes.

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Class of binary sequences with zero correlationzone

Cited by 318 publications

References 1 publication

Generalized Pairwise Z-Complementary Codes

Generalized Pairwise Z-Complementary Codes

A ternary zero-correlation zone sequence sets construction procedure

Individual Channel Estimation in a Diamond Relay Network Using Relay-Assisted Training

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