Effective Capacity Maximization in Multi-Antenna Channels with Covariance Feedback

被引:34
作者
Jorswieck, Eduard A. [1 ]
Mochaourab, Rami [1 ]
Mittelbach, Martin [1 ]
机构
[1] Tech Univ Dresden, Commun Lab, D-8027 Dresden, Germany
关键词
Effective capacity; multi-antenna; convex optimization; channel hardening; MIMO WIRELESS SYSTEMS; FADING CHANNELS; NETWORKS; QUALITY; SERVICE; ALLOCATION; MATRICES; POWER; MODEL; QOS;
D O I
10.1109/TWC.2010.080210.091060
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
The tradeoff between average transmission rate and average delay is important for the system design of future wireless communication systems. In double-correlated multiple antenna channels, the spatial degrees of freedom allow to optimize the transmit strategy under throughput/delay priority. In this work, we maximize the effective capacity of a MIMO system with covariance feedback. Interestingly, the larger the delay requirement is, the more spatial degrees of freedom are used to avoid low instantaneous transmission rates. This fact is shown analytically by deriving a closed-form expression for the beamforming optimality range as a function of the spatial correlation, the SNR, and the QoS exponent. Numerical simulations illustrate the average effective capacity optimization and confirm the theoretical results.
引用
收藏
页码:2988 / 2993
页数:6
相关论文
共 32 条
  • [1] Abramowitz M., 1970, HDB MATH FUNCTIONS
  • [2] [Anonymous], P IEEE GLOBECOM
  • [3] [Anonymous], 1974, MICROWAVE MOBILE CO
  • [4] Fading channels: Information-theoretic and communications aspects
    Biglieri, E
    Proakis, J
    Shamai, S
    [J]. IEEE TRANSACTIONS ON INFORMATION THEORY, 1998, 44 (06) : 2619 - 2692
  • [5] Optimization-theoretic analysis of stability-optimal transmission policy for multiple-antenna multiple-access channel
    Boche, Holger
    Wiczanowski, Marcin
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2007, 55 (06) : 2688 - 2702
  • [6] Boyd S., 2004, CONVEX OPTIMIZATION, VFirst, DOI DOI 10.1017/CBO9780511804441
  • [7] EFFECTIVE BANDWIDTH IN HIGH-SPEED DIGITAL NETWORKS
    CHANG, CS
    THOMAS, JA
    [J]. IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 1995, 13 (06) : 1091 - 1100
  • [8] Capacity scaling in MIMO wireless systems under correlated fading
    Chuah, CN
    Tse, DNC
    Kahn, JM
    Valenzuela, RA
    [J]. IEEE TRANSACTIONS ON INFORMATION THEORY, 2002, 48 (03) : 637 - 650
  • [10] Capacity limits of MIMO channels
    Goldsmith, A
    Jafar, SA
    Jindal, N
    Vishwanath, S
    [J]. IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2003, 21 (05) : 684 - 702