Cross-correlated correlative encoding: an efficient modulation method

Author

Brown, Chuck ; Feher, Kamilo

Author_Institution

California Univ., Davis, CA, USA

Volume

43

Issue

1

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

47

Lastpage

55

Abstract

A new cross-correlated correlative baseband encoding scheme is presented as a means of doubling the capacity of a mobile communication systems without the cost of complex baseband filtering. System performance is studied in a non-linear amplified channel for 6 to 9 dB improved power efficiency. The system is analyzed for spectrum efficiency, adjacent channel interference (ACI), co-channel interference (CCI) and bit error rate (BER) performance in a Rayleigh faded cellular network. Computer simulated results and hardware experimentation show that modified correlative encoding achieves up to a 70% improvement in spectrum efficiency and double network capacity when compared to constant envelope GMSK modulation used in GSM, DCS1800, PCS1900 and DECT systems

Keywords

Rayleigh channels; adjacent channel interference; cellular radio; channel capacity; cochannel interference; correlation methods; encoding; fading; quadrature phase shift keying; radio networks; ACI; BER performance; CB-FQPSK; CCI; DCS1800; DECT; GSM; PCS1900; Rayleigh faded cellular network; adjacent channel interference; bit error rate; cochannel interference; computer simulated results; constant envelope GMSK modulation; cross-correlated correlative baseband encoding; hardware experimentation; mobile communication systems; modified correlative encoding; network capacity; nonlinear amplified channel; power efficiency; spectrum efficiency; system capacity; system performance; Baseband; Bit error rate; Costs; Encoding; Filtering; Interchannel interference; Mobile communication; Performance analysis; Radiofrequency interference; System performance;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.566824

Filename

566824