Title :
Comparison of precoding methods for broadband MIMO systems
Author :
Al-Hanafy, Waleed ; Weiss, Stephan
Author_Institution :
Dept. of EEE, Univ. of Strathclyde, Glasgow, UK
Abstract :
In this paper we investigate non-linear precoding solutions for the problem of broadband multiple-input multiple-output (MIMO) systems. Based on a broadband singular value decomposition (BSVD) we can decouple a broadband MIMO channel into independent dispersive spectrally majorised single-input single-output (SISO) subchannels. Bit loading is proposed to optimally utilise these SISO subchannels after mitigating their individual inter-symbol-interference (ISI) using Tomlinson-Harashima precoding (THP). This method is benchmarked against recent results of both MMSE linear and THP designed for frequency-selective MIMO channels. Simulation results show that better bit-error-ratio (BER) can be achieved especially for higher throughput targets when compared to the benchmark.
Keywords :
MIMO communication; broadband networks; error statistics; interference suppression; intersymbol interference; least mean squares methods; precoding; singular value decomposition; MMSE; Tomlinson-Harashima precoding; bit loading; bit-error-ratio; broadband MIMO systems; broadband multiple-input multiple-output systems; broadband singular value decomposition; frequency-selective MIMO channels; high throughput targets; intersymbol interference; nonlinear precoding solutions; precoding methods; single-input single-output subchannels; Bit error rate; Decision feedback equalizers; Dispersion; Finite impulse response filter; Frequency; Intersymbol interference; MIMO; Radiofrequency interference; Receiving antennas; Throughput;
Conference_Titel :
Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2009 3rd IEEE International Workshop on
Conference_Location :
Aruba, Dutch Antilles
Print_ISBN :
978-1-4244-5179-1
Electronic_ISBN :
978-1-4244-5180-7
DOI :
10.1109/CAMSAP.2009.5413248
