APP processing for high performance MIMO systems

被引：5

作者：

Garrett, D ^{[1
]}

Davis, L ^{[1
]}

ten Brink, S ^{[1
]}

Hochwald, B ^{[1
]}

机构：

[1] Lucent Technol, Bell Labs Res, Holmdel, NJ 07733 USA

来源：

PROCEEDINGS OF THE IEEE 2003 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2003年

关键词：

D O I：

10.1109/CICC.2003.1249401

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：

One of the most demanding components in a multiple-input multiple-output (MIMO) receiver is the symbol detector. While linear cancellation techniques are typically used, the optimum maximum likelihood (ML) search algorithm combined with soft output processing, e.g. a posteriors probability (APP), offers superior performance and is feasible in current technology. An ASIC can be built for a 4x4 QPSK detector for HSDPA in less than 1.68 mm(2) in a 0.18(mu)m process. An MLAPP search grows exponentially as the constellation size is increased, but it is still feasible to achieve near ML performance for 4x4 16QAM using "spherical" techniques in a complexity that remains a minor portion of the overall MIMO receiver.

引用

页码：271 / 274

页数：4

共 11 条

[1]

*3GPP, 2001, TR25848 3GPP

[2]

*AG SYST, 2002, 162 MBITS S HIGH SPE

[3]

DAVIS LM, 2003, P VTC SPR S KOR APR

[4] On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas [J].