The Experts below are selected from a list of 15192 Experts worldwide ranked by ideXlab platform

Yingchang Liang - One of the best experts on this subject based on the ideXlab platform.

  • throughput comparison of wireless Downlink Transmission schemes with multiple antennas
    International Conference on Communications, 2005
    Co-Authors: Rui Zhang, J M Cioffi, Yingchang Liang
    Abstract:

    This paper considers wireless Downlink Transmission when multiple antennas are employed at both the base station (BS) and the mobile terminals. Assorted dynamic Transmission schemes based on TDMA and SDMA are described and their associated system throughput limits are compared, under different assumptions on the availability of channel side information (CSI) at the BS. The trade-off between scheme complexity and system throughout is discussed.

  • ICC - Throughput comparison of wireless Downlink Transmission schemes with multiple antennas
    IEEE International Conference on Communications 2005. ICC 2005. 2005, 1
    Co-Authors: Rui Zhang, J M Cioffi, Yingchang Liang
    Abstract:

    This paper considers wireless Downlink Transmission when multiple antennas are employed at both the base station (BS) and the mobile terminals. Assorted dynamic Transmission schemes based on TDMA and SDMA are described and their associated system throughput limits are compared, under different assumptions on the availability of channel side information (CSI) at the BS. The trade-off between scheme complexity and system throughout is discussed.

  • Combined beamforming with space-time block coding for wireless Downlink Transmission
    Proceedings IEEE 56th Vehicular Technology Conference, 1
    Co-Authors: Zhongding Lei, Francois Chin, Yingchang Liang
    Abstract:

    The paper proposes a Downlink Transmission scheme achieving both transmit diversity gain and beamforming gain via combining space-time block coding (STBC) with adaptive beamforming techniques. The beamforming weights of the combined system are optimized in such a way that the virtual channel coefficients corresponding to STBC-encoded data streams, seen at the mobile receiver, are guaranteed to be uncorrelated. Therefore, the diversity order promised achievable by a conventional system with STBC can be obtained completely. At the same time, an additional beamforming gain is achieved by maximizing the received signal-to-noise ratio (SNR) at the mobile receiver. The superiority of the proposed scheme is confirmed by numerical simulation results.

Zhang Ping - One of the best experts on this subject based on the ideXlab platform.

  • VTC Fall - A Spatial Multiplexing MIMO Scheme with Beamforming for Downlink Transmission
    2007 IEEE 66th Vehicular Technology Conference, 2007
    Co-Authors: Li Lihua, Tao Xiaofeng, Zhang Ping
    Abstract:

    This paper investigates a spatial multiplexing MIMO scheme with beamforming for Downlink Transmission. The proposed scheme combines spatial multiplexing MIMO technique with beamforming, which has the advantages of both techniques. The proposed scheme utilizes the uplink direction of arrival (DOA) to perform Downlink beamforming. It is able to transmit parallel data streams as well as providing beamforming gain and improve the system performance significantly. The proposed scheme provides better BER performance than the traditional spatial multiplexing and beamforming techniques under the same simulation environment.

Li Lihua - One of the best experts on this subject based on the ideXlab platform.

  • VTC Fall - A Spatial Multiplexing MIMO Scheme with Beamforming for Downlink Transmission
    2007 IEEE 66th Vehicular Technology Conference, 2007
    Co-Authors: Li Lihua, Tao Xiaofeng, Zhang Ping
    Abstract:

    This paper investigates a spatial multiplexing MIMO scheme with beamforming for Downlink Transmission. The proposed scheme combines spatial multiplexing MIMO technique with beamforming, which has the advantages of both techniques. The proposed scheme utilizes the uplink direction of arrival (DOA) to perform Downlink beamforming. It is able to transmit parallel data streams as well as providing beamforming gain and improve the system performance significantly. The proposed scheme provides better BER performance than the traditional spatial multiplexing and beamforming techniques under the same simulation environment.

Feng Wang - One of the best experts on this subject based on the ideXlab platform.

  • VTC Spring - Joint Subcarrier and Power Allocation for Downlink Transmission in OFDMA Heterogeneous Networks
    2016 IEEE 83rd Vehicular Technology Conference (VTC Spring), 2016
    Co-Authors: Feng Wang
    Abstract:

    Heterogeneous network is a novel network architecture proposed in Long-Term-Evolution (LTE) which can highly increase the capacity and coverage compared with the conventional networks. However, in order to provide the best possible services, appropriate resource management must be applied. In this paper, we consider the joint optimization of subcarrier and power allocation for Downlink Transmission in multi- cell orthogonal frequency division multiple access (OFDMA) heterogeneous networks. As far as we know, this is the first paper which joint optimize subcarrier and power allocation when full frequency reuse is assumed. We maximize the throughput by a mutual iterative algorithm. We show that our algorithm has a good performance and a low complexity.We also prove the convergence of our algorithm.

  • Space-time coded eigenbeamforming for wireless Downlink Transmission
    Proceedings 7th International Conference on Signal Processing 2004. Proceedings. ICSP '04. 2004., 1
    Co-Authors: Feng Wang, Guisheng Liao
    Abstract:

    Space-time (ST) coded eigenbeamforming (EBF) is studied in this paper. A group of eigenvectors of the spatial-correlated-matrix (SCM) are introduced as the weights of the ST code-matrix. In a multipath environment, EBF can channel the transmit power in the directions with the biggest gains. It works very well with Downlink Transmission and time-division-duplex modes. Since ST coded EBF technique combines diversity and beamforming techniques, it is one of the most important research directions in the realm of space-time coding.

Tao Xiaofeng - One of the best experts on this subject based on the ideXlab platform.

  • VTC Fall - A Spatial Multiplexing MIMO Scheme with Beamforming for Downlink Transmission
    2007 IEEE 66th Vehicular Technology Conference, 2007
    Co-Authors: Li Lihua, Tao Xiaofeng, Zhang Ping
    Abstract:

    This paper investigates a spatial multiplexing MIMO scheme with beamforming for Downlink Transmission. The proposed scheme combines spatial multiplexing MIMO technique with beamforming, which has the advantages of both techniques. The proposed scheme utilizes the uplink direction of arrival (DOA) to perform Downlink beamforming. It is able to transmit parallel data streams as well as providing beamforming gain and improve the system performance significantly. The proposed scheme provides better BER performance than the traditional spatial multiplexing and beamforming techniques under the same simulation environment.