Browse > Article
http://dx.doi.org/10.5573/ieek.2013.50.4.003

A Study on LMMSE Receiver for Single Stream HSDPA MIMO Systems using Precoding Weights  

Joo, Jung Suk (Hankuk University of Foreign Studies)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.4, 2013 , pp. 3-8 More about this Journal
Abstract
In CDMA-based systems, recently, researches on chip-level equalization have been studied in order to improve receiving performance when supporting high-rate data services. In this paper, we consider a chip-level LMMSE (linear minimum mean-squared error) receiver for D-TxAA (dual stream transmit antenna array) based single stream HSDPA MIMO systems using precoding weights. First, we will derive precoding weights for maximizing the total instantaneous received power. We will also analyze the effects of both transmit delay of precoding weights and mobile velocity on chip-level LMMSE receivers, which is verified through computer simulations in various mobile channel environments.
Keywords
HSDPA MIMO systems; D-TxAA; precoding weights; LMMSE receiver;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 T. Krauss and M. Zoltowski, "MMSE equalization under conditions of soft hand-off," Proc. IEEE Int. Symp. Spread Spectrum Techniques and Applications, Vol. 2, pp. 386-392, Parsippany, NJ, USA, Sep. 2000.
2 C. D. Frank, "MMSE reception of DS-CDMA with open-loop transmit diversity," Proc. IEEE Int. Conf. 3G Mobile Commun. Tech., pp. 156-160, London, UK, March 2001.
3 P. Darwood, P. Alexander, and I. Oppermann, "LMMSE chip equalisation for 3GPP WCDMA downlink receivers with channel coding," Proc., IEEE ICC'2001, pp. 1421-1425, Helsinki, Finland, June 2001.
4 K. Hooli, M. Juntti, M. J. Heikkila, P. Komulainen, M. Latva-aho, and J. Lilleberg, "Chip-level channel equalization in WCDMA downlink," EURASIP Journal on Applied Signal Processing, pp. 757-770, Jan. 2002.
5 S. P. Shenoy, I. Ghauri, and D. T. M. Slock, "Optimal precoding and MMSE receiver designs for MIMO WCDMA," Proc. IEEE VTC'2008, pp. 893-897, Singapore, May 2008.
6 T. Nihtila and V. Haikola, "HSDPA Performance with dual stream MIMO in a combined macro-femto cell network," Proc. IEEE VTC'2010, pp. 1-5, Taipei, May 2010.
7 주정석, "HSDPA MIMO 시스템을 위한 Griffiths 알고리즘 기반 적응 LMMSE Equalizer," 전자공학회 논문지 제 48권 TC편 제11호, pp. 28-34, Nov. 2011.   과학기술학회마을
8 J. Kurjenniemi, J. Leino, Y. Kaipainen, and T. Ristaniemi, "Closed looop mode 1 transmit diversity with high speed downlink packet access," Proc. ICCT'2003, pp. 757-761, Beijing, April 2003.
9 R4-050728, "Simulation assumption for Rx diversity + LMMSE equalizer enhanced HSDPA receiver (Type 3)," TSG RAN WG4 meeting#36, London, United Kingdom, Aug. 2005.
10 3GPP, TS 25.101, V7.1.0, "User equipment (UE) radio transmission and reception (FDD)," Sept. 2005.
11 H. Holma and A. Toskala, Eds., Wideband CDMA for UMTS, John Wiley and Sons, Newyork, NY, USA, 2000.
12 3GPP TS 25.214, V7.4.0, "Physical layer procedures (FDD) (Release 7)," May 2007.