TY - GEN
T1 - One chip demodulator using RF front-end saw correlator for 2.4 GHz asynchronous spread spectrum modem
AU - Nakase, H.
AU - Kasai, T.
AU - Nakamura, Y.
AU - Masu, K.
AU - Tsubouchi, K.
N1 - Publisher Copyright:
@ IEEE
PY - 1994
Y1 - 1994
N2 - A new compact 2.4 GHz spread spectrum (SS) modem has been implemented using a surface acoustic wave (SAW) correlator. We have designed and fabricated the 2.4 GHz SAW correlator on AlN/Al,O, combination, Using the SAW correlator and SAW delay line at RF front-end, 2.4 GHz SS signal is directly demodulated to baseband data. The PN code used is ll-chip Barker code whose rate is 22 MHz, and baseband data rate is 2 Mbps. The degradation of the measured BER from the theoretical limit is found to be less than 3 dB of E,,/N, We propose a time division multiplex scheme utilizing the orthogonality of the spreading PN code in the time domain. The channel multiplex is experimentally confirmed using shifted Barker codes.
AB - A new compact 2.4 GHz spread spectrum (SS) modem has been implemented using a surface acoustic wave (SAW) correlator. We have designed and fabricated the 2.4 GHz SAW correlator on AlN/Al,O, combination, Using the SAW correlator and SAW delay line at RF front-end, 2.4 GHz SS signal is directly demodulated to baseband data. The PN code used is ll-chip Barker code whose rate is 22 MHz, and baseband data rate is 2 Mbps. The degradation of the measured BER from the theoretical limit is found to be less than 3 dB of E,,/N, We propose a time division multiplex scheme utilizing the orthogonality of the spreading PN code in the time domain. The channel multiplex is experimentally confirmed using shifted Barker codes.
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U2 - 10.1109/WNCMF.1994.530826
DO - 10.1109/WNCMF.1994.530826
M3 - Conference contribution
AN - SCOPUS:85034632926
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 374
EP - 378
BT - Wireless Networks - Catching the Mobile Future
A2 - Arnbak, Jens C.
A2 - Weber, Jos H.
A2 - Prasad, Ramjee
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994
Y2 - 18 September 1994 through 22 September 1994
ER -