Title :
Quasi-coherent CPM-MFSK signaling for frequency hopping system
Author_Institution :
Oulu Univ., Finland
Abstract :
In this study an attempt is made to introduce the use of quasi-coherent continuous phase modulated (CPM) signals with MFSK modulation in a frequency hopping (FH) environment where the use of coherent reception is difficult due to the unknown phase of the carrier. The reference carrier is obtained through the use of few pilot symbols or reference symbols which eliminates the need of accurate phase synchronization circuitry. The performance of the proposed method is compared with the performances of theoretical coherent and noncoherent systems. The results obtained state that given sufficient number of pilot symbols the performance of the quasi-coherent system is close to that of a coherent system
Keywords :
AWGN channels; continuous phase modulation; demodulation; frequency hop communication; frequency shift keying; telecommunication signalling; AWGN channel; CPM-MFSK signaling; MFSK modulation; coherent reception; continuous phase modulated signals; frequency hopping system; noncoherent systems; pilot symbols; quasi-coherent system; reference carrier; reference symbols; AWGN channels; Circuits; Continuous phase modulation; Data mining; Degradation; Demodulation; Error analysis; Frequency synchronization; Gaussian noise; Signal generators;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.878082
