Code-phase-shift keying: a power and bandwidth efficient spread spectrum signaling technique for wireless local area network applications

Wong, Alexa M.; Leung, Victor C. M.

doi:10.1109/ccece.1997.608262

Cited by 22 publications

(19 citation statements)

References 5 publications

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“…The Code Shift Keying is a direct-sequence spreadspectrum (DS-SS) signaling method which overcomes the spreading gain versus data rate limitations [2].…”

Section: A Csk Definitionmentioning

confidence: 99%

Implementation of Code Shift Keying signalling technique in GALILEO E1 signal

Pena

Ries

Boucheret

et al. 2010

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC

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One of limitations of the current GNSS signals is their low data information rate. This low data information rate does not allow, for example, the transmission of additional commercial services or the transmission of redundant ephemeris data. The Code Shift Keying (CSK) is a signaling technique specifically designed to increase the transmission bit rate of a spreading spectrum signal. Therefore, one solution to increase the data information rate of the GNSS signals is to introduce the CSK technique in them. In this paper, the implementation of the CSK technique into GNSS signals is inspected through the development and analysis of the likelihood ratio expression of the bits transmitted inside a CSK symbol, and through the identification of the best mapping between bits belonging to a word and bits transmitted inside a CSK symbol.Finally, the impact of the CSK technique on the GALILEO E1 signal is analyzed by calculating the CSK demodulation performance for a given scenario and the drawbacks of the technique on the signal acquisition and tracking processes.

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“…The Code Shift Keying is a direct-sequence spreadspectrum (DS-SS) signaling method which overcomes the spreading gain versus data rate limitations [2].…”

Section: A Csk Definitionmentioning

confidence: 99%

Implementation of Code Shift Keying signalling technique in GALILEO E1 signal

Pena

Ries

Boucheret

et al. 2010

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC

View full text Add to dashboard Cite

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“…The detailed calculation of the above error probability can be found in [5], which shows that the performance of CPSK is similar to M-FSK, in that power efficiency increases with M. When , CPSK requires a lower (bit-energy to noise-density ratio) than BPSK at any given BER. For example, at BER=10 -5 , = 9.5 dB for BPSK-DS/SS while = 8.3 dB, 7.3 dB, 6.7 dB, and 6 dB with k = 3, 4, 5, and 6, respectively for CPSK.…”

Section: The Cpsk Signaling Schemementioning

confidence: 99%

“…If the drift is 1/3 chip less in 1 PN cycle, the chip duration becomes: (4) Thus the frequency required to have 1 chip deducted is: (5) Similarly the frequency required to have 1 chip added to a PN cycle is: …”

Section: The Analog Sectionmentioning

confidence: 99%

“…Another drawback is the need of extra hardware to generate different PN codes. To minimize these drawbacks, a novel M-ary SS signalling scheme, known as code-phase-shift keying (CPSK) has been proposed [5]. Previous performance evaluations [5] and implementation using digital signal processing (DSP) techniques [6] have confirmed the CPSK scheme to be practical while enhancing data throughput relative to conventional DS/SS schemes.…”

Section: Introductionmentioning

confidence: 99%

“…To minimize these drawbacks, a novel M-ary SS signalling scheme, known as code-phase-shift keying (CPSK) has been proposed [5]. Previous performance evaluations [5] and implementation using digital signal processing (DSP) techniques [6] have confirmed the CPSK scheme to be practical while enhancing data throughput relative to conventional DS/SS schemes. However, the cost of building a CPSK transceiver (or modem) using DSP boards is too expensive and the data throughput too low if the signaling method is to be commercialized for consumer applications.…”

Section: Introductionmentioning

confidence: 99%

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An FPGA receiver for CPSK spread spectrum signaling

Chan

Leung

1999

IEEE Trans. Consumer Electron.

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In this paper, we present the design, implementation and testing of an M-ary direct sequence spread spectrum receiver suitable for wireless home networking applications. The receiver employs a novel Code-Phase-Shift Keying (CPSK) signaling scheme, in which each of the M signaling waveforms is derived from a different phase shift of a single pseudonoise code sequence. The receiver consists of an IF demodulator and a CPSK baseband decoder, implemented using discrete components and an FPGA (field programmable gate array) chip, respectively. A modified double-dwell serial search scheme is used for code acquisition and tracking, and the carrier-phase synchronization is solved by a Costas loop in the IF demodulator and a double threshold detection scheme in the CPSK decoder. Measurements of receiver performance are presented and compared with theoretical calculations.

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Link¹,

Leung²

1998

International Journal of Wireless Information Networks

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Code-phase-shift keying: a power and bandwidth efficient spread spectrum signaling technique for wireless local area network applications

Cited by 22 publications

References 5 publications

Implementation of Code Shift Keying signalling technique in GALILEO E1 signal

Implementation of Code Shift Keying signalling technique in GALILEO E1 signal

An FPGA receiver for CPSK spread spectrum signaling

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