Title :
A high efficient and interference resistant half-chip offset QPSK-CDMA scheme for wireless LAN systems
Author :
Sugiyama, Takatoshi ; Mizoguchi, Masato ; Kubota, Shuji ; Kato, Shuzo
Author_Institution :
Wireless Syst. Lab., NTT, Japan
Abstract :
This paper proposes a half-chip offset QPSK (quadrature phase shift keying) modulation CDMA (code division multiple access) scheme to allow the simple differential detection while realizing a compact spectrum in nonlinear channels for wireless LAN (local area network) systems. The experimental results show the proposed scheme combined with forward error correction (FEC) achieves excellent Pe performances in adjacent channel interference (ACI) and co-channel interference (CCI) environments and significantly improves the frequency utilization efficiency
Keywords :
adjacent channel interference; cochannel interference; code division multiple access; coding errors; demodulation; error statistics; forward error correction; performance evaluation; probability; quadrature phase shift keying; radiofrequency interference; wireless LAN; FEC; adjacent channel interference; cochannel interference; code division multiple access; compact spectrum; differential detection; error probability; experimental results; forward error correction; frequency utilization efficiency; half-chip offset QPSK-CDMA; interference resistance; local area network; nonlinear channels; quadrature phase shift keying; wireless LAN; wireless LAN systems; Forward error correction; Interchannel interference; Local area networks; Modulation coding; Multiaccess communication; Phase detection; Phase modulation; Quadrature phase shift keying; Radiofrequency interference; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference, 1995. GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/GLOCOM.1995.502787
