Title :
MMSE weight for single-carrier overlap FDE
Author :
Obara, Tatsunori ; Adachi, Fumiyuki
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai, Japan
Abstract :
Overlap frequency-domain equalization (FDE) requires no cyclic prefix (CP) insertion. In this paper, a new minimum mean square error (MMSE) weight is derived for the overlap FDE. In the previous paper, the MMSE weight for overlap FDE is derived by approximating the IBI as a white Gaussian variable. However, the IBI is an independent colored noise. We derive a new MMSE weight by taking into account this fact. We evaluate the bit error rate (BER) performance by computer simulation, and show that overlap FDE using the newly derived MMSE weight reduces the residual inter-symbol interference (ISI) more and hence, improves the BER performance.
Keywords :
equalisers; error statistics; intersymbol interference; least mean squares methods; wireless channels; ISI; MMSE weight; bit error rate; cyclic prefix insertion; interblock interference; intersymbol interference; minimum mean square error; overlap frequency domain equalization; single carrier overlap FDE; white Gaussian variable; Bit error rate; Delay; Fading; Frequency domain analysis; Interference; Multiaccess communication; Noise; Frequency-selective fading channel; MMSE weight; overlap FDE; single-carrier transmission;
Conference_Titel :
Communications (APCC), 2011 17th Asia-Pacific Conference on
Conference_Location :
Sabah
Print_ISBN :
978-1-4577-0389-8
DOI :
10.1109/APCC.2011.6152798
