Title :
Performance analysis of subband adaptive arrays in multipath propagation environment
Author :
Zhang, Yimin ; Yang, Kehu ; Amin, Moeness G.
Author_Institution :
ATR Adaptive Commun. Res. Lab., Kyoto, Japan
Abstract :
This paper proposes the subband adaptive array processing technique, which is used to mitigate both inter-symbol interference (ISI) and cochannel interference (CCI) in digital mobile communications. The analysis filters enhance the signal coherence of multipath rays in each subband. This enhancement is blind in the sense that no a priori knowledge of the arriving signals is required. With the increased coherence, both the desired and the CCI signals are effectively equalized by the subsequent spatial processing. Therefore, the effect of multipath fading associated with the desired signal can be greatly reduced. Additionally, the CCI signals and their multipaths can be suppressed with fewer array degrees-of-freedom
Keywords :
adaptive signal processing; array signal processing; cochannel interference; digital radio; fading channels; filtering theory; interference suppression; intersymbol interference; mobile radio; multipath channels; CCI; ISI; analysis filters; array degrees-of-freedom; cochannel interference; digital mobile communications; filter banks; inter-symbol interference; multipath fading; multipath propagation environment; multipath rays; performance analysis; signal coherence; spatial processing; subband adaptive arrays; Adaptive arrays; Array signal processing; Coherence; Filters; Interchannel interference; Intersymbol interference; Mobile communication; Performance analysis; Radiofrequency interference; Signal analysis;
Conference_Titel :
Statistical Signal and Array Processing, 1998. Proceedings., Ninth IEEE SP Workshop on
Conference_Location :
Portland, OR
Print_ISBN :
0-7803-5010-3
DOI :
10.1109/SSAP.1998.739323