Baseband receiver design for 3GPP Long Term Evolution downlink OFDMA systems under fast-fading channels
Journal
IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS
Date Issued
2010
Author(s)
Abstract
This paper presents baseband receiver design for the third Generation Partnership Project (3GPP) Long Term Evolution (LTE) downlink systems under fast-fading channels. We aim to support 2 × 2 open-loop spatial multiplexing at high mobility up to 240 Km/hr with well-synchronized capability. The proposed receiver contains the functional blocks of mode detection, synchronization, channel tracking, inter-carrier interference (ICI) cancellation and iterative MIMO detection. When the receiver starts up, a blind mode detection algorithm is designed to distinguish the length of cyclic prefix. The proposed estimation method for the residual carrier frequency offset and sampling clock offset can exploit the information carried in the scattered reference signals compared to the conventional approaches and thus better mean squared estimation error can be obtained. The iterative inter-antenna interference (IAI) plus ICI cancellation scheme improves the performance of MIMO detection under high mobility. As a result, the receiver has good performance even with constellation of 64-QAM under the mobility of 240 Km/hr. © 2010 IEEE.
Event(s)
2010 Asia Pacific Conference on Circuit and System, APCCAS 2010
Subjects
3GPP LTE
baseband receiver
ICI cancellation
spatial multiplexing
synchronization
Description
Kuala Lumpur, 6 December 2010 through 9 December 2010
Type
conference paper