The Bank of Matched Filters for an Optical ZCZ Code Using a Sylvester Type Hadamard Matrix

Matsumoto, Takahiro; Tsukiashi, Shigeo; Matsufuji, Shinya; Tanada, Yoshihiro

doi:10.1093/ietfec/e89-a.9.2292

Cited by 13 publications

(8 citation statements)

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“…Similarly, the relative loss with respect to a pair of mismatched ZCZ sequences, i.e., ZCZ , and , is measured by the efficiency (9) III. UPPER BOUND ON MISMATCHED ZCZ SEQUENCES for and for and for and (11) can be written as Suppose the sum of vectors (sequences) can be expressed by a zero-vector as follows:…”

Section: Preliminariesmentioning

confidence: 99%

See 1 more Smart Citation

Construction of Optimal Mismatched Periodic Sequence Sets With Zero Correlation Zone

Trinh

Fan

Peng

et al. 2008

IEEE Signal Process. Lett.

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In mobile communications, navigation, and radar applications, good periodic binary sequences are normally used with matched-filter technique. However, from the viewpoint of signal processing, there is no need to only consider the filter coefficients as binary. This letter presents a theoretical bound for real-valued mismatched sequence sets with zero correlation zone (ZCZ) and then proposes a method for constructing sets of optimal mismatched ZCZ sequences with respect to the theoretical bound for application in mismatched filtering.

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Section: Preliminariesmentioning

confidence: 99%

“…A special case of periodic mismatched sequences which is a set of near-optimal pairs of binary and biphase sequences with zero correlation zone was proposed for an optical M-ary/DS-SS system in [9]. Based on interleaving operation, we introduced a general construction but not optimal for periodic mismatched filtering [10].…”

Section: Introductionmentioning

confidence: 99%

Construction of Optimal Mismatched Periodic Sequence Sets With Zero Correlation Zone

Trinh

Fan

Peng

et al. 2008

IEEE Signal Process. Lett.

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“…In this optical ZCZ-CDMA system, the optical ZCZ code is used as the spread code, and is a set of pairs of binary and biphase sequences with zero-correlation zone [7]. We have proposed the compact construction of code generators [8] and banks of matched filters (MFs) [9], [10] for this ZCZ-CDMA system. However, it is not clear that bit error rate (BER) performance improves by the parallel transmission system based on the optical ZCZ-CDMA system.…”

Section: Introductionmentioning

confidence: 99%

Trial of free-space parallel transmission system based on optical ZCZ-CDMA system

Matsumoto

Ohira

Muranaga

et al. 2013

The Sixth International Workshop on Signal Design and Its Applications in Communications

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In this paper, we manufacture the parallel transmission system consisting of an infrared light emitting diode (LED), an avalanche photo diode (APD) module and a field programmable gate array (FPGA) board corresponding to 132, 540 logic elements (LEs) by way of trial, and evaluate the BER performance of the optical ZCZ-CDMA system with the equal gain combining (EGC) by the indoor experiment. As a result of indoor experiment with the parallel transmission system, BER performance improves with an increase in number of received APD by the EGC.

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“…Of course, the optical ZCZ code is suitable for optical wireless communications, but compact wireless radio communication systems are possible if it is applied to wireless radio communications. We have proposed the construction of a compact matched filter bank for this code with zero-correlation zone 4n−2 [9], [10] with positive n; it is called the compact-type matched filter bank. However, the M-ary/ASK-SS system using this filter bank might have reduced BER performance because the input-output characteristics of this filter bank for this code with zero-correlation zone 4n−2 are nonlinear [11] - [13].…”

Section: Introductionmentioning

confidence: 99%

BER Performance of ASK-SS and M-ary/ASK-SS Systems Using Compact Matched Filter Bank for an Optical ZCZ Code with Zero-Correlation Zone 4n-2

Matsumoto

Torii

Ida

et al. 2013

Journal of Signal Processing

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The optical zero-correlation zone (ZCZ) code, which is a set of pairs of binary and biphase sequences with a zerocorrelation zone, can provide code division multiple access (CDMA) communication systems without cochannel interference. The M-ary amplitude shift keying spread spectrum (M-ary/ASK-SS) system using this code can detect a desired sequence without interference from undesired sequences. We have proposed the construction of a compact matched filter bank for this code, which is called the compact-type matched filter bank. However, the M-ary/ASK-SS system using this filter bank might have reduced bit error rate (BER) performance because the input-output characteristics of this filter bank for this code with the zero-correlation zone 4n − 2 with positive n are nonlinear. In this paper, we clarify that the BER performance of an M-ary/ASK-SS system using a compact-type matched filter bank over the additive white Gaussian noise (AWGN) and Rayleigh fading channels is not influenced by the nonlinear characteristics of this filter bank, using the theoretical formula of BER characteristics and computer simulation. The BER performance of the ASK-SS system using the compact-type matched filter is reduced compared with that of a system using a direct-type matched filter, as expected. However, the BER performance of the M-ary/ASK-SS system using this compacttype matched filter bank is equal to that of a system using a parallel-type matched filter bank. In fact, this compact-type matched filter bank is effective in the M-ary/ASK-SS system because the BER performance of the M-ary/ASK-SS system is not influenced by the nonlinear characteristics of the compact-type matched filter bank.Keywords: optical ZCZ code, ASK-SS system, M-ary/ASK-SS system, matched filter bank, nonlinear characteristic tems over the additive white Gaussian noise (AWGN) andRayleigh fading channels.

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The Bank of Matched Filters for an Optical ZCZ Code Using a Sylvester Type Hadamard Matrix

Cited by 13 publications

References 0 publications

Construction of Optimal Mismatched Periodic Sequence Sets With Zero Correlation Zone

Construction of Optimal Mismatched Periodic Sequence Sets With Zero Correlation Zone

Trial of free-space parallel transmission system based on optical ZCZ-CDMA system

BER Performance of ASK-SS and M-ary/ASK-SS Systems Using Compact Matched Filter Bank for an Optical ZCZ Code with Zero-Correlation Zone 4n-2

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