Improved Soft-Output RAKE Receiver for CDMA Mobile Terminals with High Data Rates |
| |
Authors: | Kettunen Kimmo Lilleberg Jorma |
| |
Affiliation: | (1) Signal Processing Laboratory, Helsinki University of Technology, Finland;(2) Nokia Mobile Phones, Finland |
| |
Abstract: | In this paper we propose a soft-output RAKE receiver for CDMA mobile terminals using low spreading factor and/or high-order modulation constellations for high data rates. Based on the outputs of theRAKE correlator fingers, the receiver produces symbol or bit metrics for soft decision decoding. The formulation of these metrics is derived analytically taking into account the multipath propagation, interfering users and channel estimation errors. Simulations show thata performance gain is achieved when low spreading factors or high-order modulation constellations are used. |
| |
Keywords: | CDMA downlink RAKE receiver bit metric |
本文献已被 SpringerLink 等数据库收录! |