Abstract
Adaptive modulation (AM) is an effective technique to approach the theoretical bound of multi-input and multi-output (MIMO) channel. In most previous studies, the AM parameters were obtained by maximizing the transmission rate for a given total transmit power. In this paper, a novel AM-MIMO algorithm is presented, which is based on minimizing total transmit power when the link’s QoS requirements are given. By taking the QoS requirements into account directly, the proposed algorithm not only makes the system more flexible, but also makes the cross layer design of wireless network easier. At last, the numerical results of the proposed scheme are presented.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chen, X., Chai, C.C., Chew, Y.H., 2004. Constrained Power Allocation Algorithm for Rate Adaptive MIMO System. IEEE Eighth International Symposium on Spread Spectrum Techniques and Applications, p.924–928.
Chow, P.S., Cioffi, J.M., Bingham, J.A.C., 1995. A practical discrete multitone transceiver loading algorithm for data transmission over spectrally shaped channels. IEEE Transactions on Communications, 43(2):773–775. [doi:10.1109/26.380108]
Chung, S.T., Goldsmith, A.J., 2001. Degrees of freedom in adaptive modulation: a unified view. IEEE Transactions on Communications, 49(9):1561–1571. [doi:10.1109/26.950343]
Fletcher, R., 1987. Practical Methods of Optimization. Wiley-Interscience, New York, p.222–230 (in Chinese).
June, C.R., Rao, B.D., 2002. Adaptive Modulation for Multiple Antenna chancnels. Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 1:526–530.
Zhou, S.L., Giannakis, G.B., 2004a. How accurate channel prediction needs to be for transmit-beamforming with adaptive modulation over Rayleigh MIMO channels? IEEE Transactions on Wireless Communications, 3(4):1285–1294. [doi:10.1109/TWC.2004.830842]
Zhou, S.L., Giannakis, G.B., 2004b. Adaptive modulation for multiantenna transmissions with channel mean feedback. IEEE Transactions on Wireless Communications, 3(5):1626–1636. [doi:10.1109/TWC.2004.833411]
Zhou, Z.D., Vucetic, B., 2004a. MIMO Systems with Adaptive Modulation. IEEE 59th Vehicular Technology Conference, 2:765–769.
Zhou, Z.D., Vucetic, B., 2004b. Design of adaptive modulation using imperfect CSI in MIMO systems. Electronics Letters, 40(17):1073–1075. [doi:10.1049/el:20045077]
Author information
Authors and Affiliations
Additional information
Project (Nos. 60272082 and 60372076) supported by the National Natural Science Foundation of China
Rights and permissions
About this article
Cite this article
Wang, Zy., He, C. Adaptive modulation MIMO system based on minimizing transmission power. J. Zhejiang Univ. - Sci. A 7, 1046–1050 (2006). https://doi.org/10.1631/jzus.2006.A1046
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1631/jzus.2006.A1046