The probability of multiple correct packet reception in coded synchronous frequency-hopped spread-spectrum networks

Multiuser demodulation and iterative decoding for frequency-hopped networks

Demodulation and decoding for frequency-hopped spread-spectrum multiple-access (FH/SSMA) systems have been traditionally conducted by conventional single-user (noncollaborative) demodulation and errors and erasures correcting decoding techniques. In this paper, we study the demodulation and decoding aspects of collaborative multiuser reception for FH/SSMA and propose methods which increase the ...

Throughput and packet error probability of cellular frequency-hopped spread-spectrum radio networks

Dual-Tone MFSK for Frequency-Hopped Spread-Spectrum Multiple Access Communications

This paper investigates a dual-tone MFSK signalling technique for a frequency-hopped spread-spectrum communication system. It allows for multiple access communications with less transmission bandwidth and thus greater number of users than conventional MFSK. Both uncoded and coded dual-tone MFSK systems are considered in multiple access interference and additive white Gaussian noise with and wit...

Performance of p-Persistent Frequency-Hopped Slotted Random Access Protocol

We propose a p-persistent protocol for slowfrequency-hopped slotted random access networks, assuming that all the users know the number of backlog users in a slot. The proposed protocol delays new packet transmission until the number of users with a packet to be retransmitted decreases to the threshold or less. Performance of the proposed protocol is evaluated with a two-dimensional Markov chai...

Interference Mitigation in Frequency-hopped Spread-spectrum Systems

| In this paper we explore the error probability of diierent coding schemes in a frequency-hopped spread-spectrum communication systems subject to partial-band interference and a system subject to Rayleigh fading. The interplay between block length of the code and channel memory is quantiied. We show that there is an optimal memory length that maximizes performance. At low signal-to-noise ratio...