Iterative channel estimation for MIMO MC-CDMA

被引：0
|
作者：
Sand, Stephan [1 ]
Raulefs, Ronald [1 ]
Dammann, Armin [1 ]
机构：
[1] German Aerosp Ctr, DLR, Inst Commun & Navigat, Oberpfaffenhofen, D-82234 Wessling, Germany
来源：
MULTI-CARRIER SPREAD-SPECTRUM | 2006年
关键词：
D O I：
10.1007/1-4020-4437-2_23
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper investigates a downlink multiple-input multiple-output (MIMO) multi-carrier code division multiple access (MC-CDMA) system with iterative channel estimation (ICE) in the receiver. In MC-CDMA, each user's data symbols are spread with a Walsh-Hadamard code. Due to the superposition of different users' spread data signals, zero-valued subcarriers can occur, which cannot be used to compute least-squares (LS) estimates in ICE. For multiple transmit antennas, the data signals coincide non-orthogonal at each receive antenna. Hence, we propose two MIMO channel estimation methods to overcome these problems and avoid noise enhancement in ICE.
引用
收藏
页码：221 / +
页数：2
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