Abstract
In the coherent CDMA systems with adaptive antenna arrays, two representative architectures for the spatial-temporal CDMA demodulator are demonstrated based on the way of weight vector multiplication, which are chip-level beamforming (CLBF) and symbol-level beamforming (SLBF). Depending on the architecture, implementational complexity differs about 1.5 ~ 2.5 times. Moreover, the performance variation due to the method of searcher beamforming and finite word-length (FWL) effects is tightly related to the architecture of the spatial-temporal demodulator. Performance comparison of various beamforming algorithms are also given for the cases of low and high data rate applications.
This work was supported by INHA University Research Grant (INHA-30362).
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Chang, K. (2004). Chip-level Beamforming and Symbol-level Beamforming in Coherent CDMA Adaptive Antenna Array Systems. In: Chandran, S. (eds) Adaptive Antenna Arrays. Signals and communication technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-05592-2_33
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DOI: https://doi.org/10.1007/978-3-662-05592-2_33
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