2002 · 12 citations · 4 references
Wireless CommunicationsEngineeringSatellite CommunicationSmart AntennaMultiple Access TechniqueBit Error RateAdaptive ModulationDigital BeamformingGmsk/tdma SystemWireless SystemsMultiuser MimoAntennaSpace CommunicationsComputer EngineeringFading ChannelDistributed Antenna ArchitectureSignal ProcessingLand Mobile CommunicationsRadarMulti-carrier CommunicationCma Adaptive ArrayMultipath Fading
The authors describe a hardware implementation of a GMSK/TDMA (Gaussian minimum-shift keying/time-division multiple-access) communication system and show the bit error rate (BER) performance of the system. This system employs a modulation data rate of 256 kb/s and accommodates 24 users/carrier. In order to reduce the effect of multipath fading, an adaptive array which has four antenna elements is implemented using a digital beamforming concept. All signal processing is carried out by digital signal processors. In an AWGN (additive white Gaussian noise) channel, this system has a 6-dB gain in input power at a BER of 1.0*10/sup -3/ compared with the ordinary system with only one antenna. A field test shows that the gain at a BER of 1.0*10/sup -3/ becomes 20 dB in a flat fading channel.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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The CM array: An adaptive beamformer for constant modulus signals
R.P. Gooch, J. Lundell · 2005 · 286 citations
A system design for TDMA mobile radios
N. Nakajima, M. Kuramoto, Keisuke Kinoshita et al. · 2002 · 28 citations
Wireless Communications, Engineering, Tdma Mobile Radios +19