Design of Efficient Receivers for DFT-S-OFDMA Systems

被引:0
作者
Jiang, Meilong
Prasad, Narayan
Wang, Xiaodong
机构
来源
2009 43RD ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS, VOLS 1 AND 2 | 2009年
关键词
LATTICE CODE DECODER;
D O I
10.1109/CISS.2009.5054782
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
DFT-Spread-OFDMA (DFT-S-OFDMA) technique has been adopted as the uplink access scheme in emerging cellular systems such as the 3GPP long term evolution (3GPP-LTE), in order to reduce the peak-to-average-power ratio (PAPR). In this scheme, data symbols are precoded using a DFT operation at the transmitter before being sent to the OFDM modulator. Moreover, emerging cellular systems will also deploy multiple antennas at the base-station to increase the transmission reliability and/or system capacity. The design of low-complexity, low-latency and high-performance receivers for such DFT-S-OFDMA systems is an important open problem that has hitherto received little attention. In this paper, three receivers are proposed and examined for such DFT-S-OFDMA systems, which include a highly efficient group soft demodulator (referred to as the GMLSD), an enhanced iterative block decision feedback equalizer (IB-DFE) and the conventional linear minimum mean square error (LMMSE) receiver. Monte Carlo simulations are performed to compare the performance of the proposed receiver algorithms. It is shown that the GMLSD receiver is ideal for the DFT-S-OFDMA based systems due to its low complexity and superior performance.
引用
收藏
页码:557 / 562
页数:6
相关论文
共 13 条
  • [1] AXNAS J, 2005, FINAL REPORT IDENTIF
  • [2] Iterative design and detection of a DFE in the frequency domain
    Benvenuto, N
    Tomasin, S
    [J]. IEEE TRANSACTIONS ON COMMUNICATIONS, 2005, 53 (11) : 1867 - 1875
  • [3] Benvenuto N., 2002, ALGORITHMS COMMUNICA
  • [4] Lattice code decoder for space-time codes
    Damen, O
    Chkeif, A
    Belfiore, JC
    [J]. IEEE COMMUNICATIONS LETTERS, 2000, 4 (05) : 161 - 163
  • [5] Iterative layered space-time receivers for single-carrier transmission over severe time-dispersive channels
    Dinis, R
    Kalbasi, R
    Falconer, D
    Banihashemi, AH
    [J]. IEEE COMMUNICATIONS LETTERS, 2004, 8 (09) : 579 - 581
  • [6] A new class of soft MIMO demodulation algorithms
    Dong, B
    Wang, XD
    Doucet, A
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2003, 51 (11) : 2752 - 2763
  • [7] *ETSI 3GPP TS, 2006, 25814 ETSI 3GPP TS
  • [8] Frequency domain equalization for single-carrier broadband wireless systems
    Falconer, D
    Ariyavisitakul, SL
    Benyamin-Seeyar, A
    Eidson, B
    [J]. IEEE COMMUNICATIONS MAGAZINE, 2002, 40 (04) : 58 - 66
  • [9] On the complexity of sphere decoding in digital communications.
    Jaldén, J
    Ottersten, B
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2005, 53 (04) : 1474 - 1484
  • [10] PRASAD N, 2008, IEEE T WIRELESS JUN