A New Pilot-Signal based Space-Time Adaptive Algorithm
Blekinge Institute of Technology, Department of Telecommunications and Signal Processing2001 (English)Conference paper (Refereed) PublishedAlternative title
En ny pilot-signlas rums-tids adaptiv algoritm (Swedish)
In the application of adaptive antenna arrays to wireless communications, a known pilot signal sequence may be used for estimating the array response at the beginning of each data frame. This pilot sequence is usually very short and conventional training methods which estimate the array response, based solely on this training sequence, may incur large estimation errors. In this paper, we propose an online modified weighted recursive least squares type of training algorithm for estimating the optimal array response by exploiting information from the whole frame of the received signal. The benefits of the proposed algorithm is that tracking of coherent noise and interference signals is substantially improved, and the overall performance is increased. Simulation results show that the proposed method offers substantial improvement when compared to the conventional least squares method.
En ny adaptiv algoritm presenteras för smart antennas. Fördelen med algoritmen är att även perioder i förbindelsen där utsänd signal är okänd, utförs en blind adaption av kanalutjämning/beamforming.
Place, publisher, year, edition, pages
Antenna arrays, Smart antennas, Adaptive beamforming, blind beamforming
Telecommunications Signal Processing
IdentifiersURN: urn:nbn:se:bth-9680Local ID: oai:bth.se:forskinfoABC50402231511EAC1256B52002A18B0OAI: oai:DiVA.org:bth-9680DiVA: diva2:837590
In Proc. of IEEE International Conference on Communications, ICT 2001