Multihopping and Decoding of Error-Correcting Code for Mfsk/fh-Ssma Systems

Mabuchi, Tetsuo; Kohno, Ryuji; Imai, Hideki

doi:10.1109/isssta.1992.665682

Cited by 12 publications

(2 citation statements)

References 3 publications

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“…The block diagram of Prime code/FHSS is Fig 3: At the FH-MFSK transmitter, M form a message . Message m is mapped to the transmission of a tone on subchannel m. For the FH-MFSK system, the total duration of the M-bit message will be referred to as the signalinginterval and will be denoted by T. The transmitter would transmit a single tone on sub-channel m for duration of T secs and the receiver would be able to decode the message reliably [12].However, in non-ideal channel conditions, the transmitter may need to employ both time and frequency diversity to increase the probability of correct reception.…”

Section: Model Descriptionmentioning

confidence: 99%

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Performance Analysis of Spread Spectrum with Prime Codes in a Wireless System Over a fading Channel

SBabu¹,

Jayanthi²

2012

IJCA

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Spread spectrum technology has become the technology for commercial systems operating in both the licensed as well as in the unlicensed spectrum. "Double-length" one hit FH pattern for dual media services provides the needs of multi users and capable of providing better services in a systems. Multiuser detectors can be employed to improve the performances. FHSS transmits the data packet on one frequency and rapidly hops to other possible frequencies to transmit the next packet. The performance of FH-SS is analyzed in AWGN channel. Prime codes are so considered as the best among the other methods. This proposes system is used to increasing the QoS, decreasing the BER and also controlling the mutual interference. The expected result shows that the performance of Prime codes over fading channels are analyses by double-length one hit FH pattern.

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Section: Model Descriptionmentioning

confidence: 99%

“…It is because the nonzero crosscorrelation values of the modulation codes add extra undesired entries. By the optimize use of message block and and time-chip increases the spectral efficiency to 0.05 to 0.3dB [12].…”

Section: Increasing the Spectral Efficiencymentioning

confidence: 99%