Distributed Transmit Antennas Research Articles

Optimal Interleaving Depth in STBC OFDM System with Distributed Transmit Antennas

Optimal Interleaving Depth in STBC OFDM System with Distributed Transmit Antennas

Antenna Location Optimization for STBC with Distributed Transmit Antennas in an Indoor Environment

Antenna Location Optimization for STBC with Distributed Transmit Antennas in an Indoor Environment

Spatial Power Spreading in V-BLAST OFDM with Distributed Transmit Antennas

Spatial Power Spreading in V-BLAST OFDM with Distributed Transmit Antennas

Differential Space Time Modulation with Distributed Transmit Antennas

Differential Space Time Modulation with Distributed Transmit Antennas

On Power Allocation for Alamouti STBC-OFDM Systems with Distributed Transmit Antennas in the Presence of Residual Frequency Offsets

在具有不同残余频偏的分布发射天线多径瑞利衰落信道中，该文使用Cholesky判决反馈检测的Alamouti STBC-OFDM链路，提出了一种抑制残余频偏影响的发射功率分配方法：以最小化残余频偏下链路的平均误比特率下界为准则，为发射天线分配功率。首先推导了残余频偏下链路的平均误比特率下界，然后给出了发射天线间最优功率分配因子的闭合解。仿真结果表明，与传统的假设频率理想同步的功率分配方法相比，在残余频偏对性能影响占主导作用的场景中，该文方法提升了链路性能，提升程度随着两根发射天线到接收机间平均信道功率增益之比的增加而增大。

Optimal Antenna Location for V-BLAST with Two Distributed Transmit Antennas in Linear Cells

Optimal Antenna Location for V-BLAST with Two Distributed Transmit Antennas in Linear Cells

Correction of Carrier Frequency Offsets in OFDM-Based Spatial Multiplexing MIMO With Distributed Transmit Antennas

This correspondence focuses on the correction of carrier frequency offsets (CFOs) in orthogonal frequency-division multiplexing (OFDM)-based spatial multiplexing multi-input-multi-output (MIMO) with distributed transmit antennas, where the CFOs between the receiver and each transmit antenna are possibly different. Considering macroscopic fading and multipath Rayleigh fading, the average power of the intercarrier interference (ICI) caused by the CFOs is derived, and the optimal CFO correction value is then obtained by maximizing the average signal-to-interference-and-noise ratio (SINR). In particular, when the difference between the minimum and maximum values of the CFOs is no more than half of the adjacent subcarrier spacing, an upper bound of the average ICI power can be obtained, and a closed-form solution of the optimal CFO correction value is derived.

A Differential Modulation Scheme for MIMO Links with Distributed Transmit Antennas

This letter proposes a differential en/decoding scheme for multiple-input multiple-output (MIMO) communication links with distributed transmit antennas, in which neither the transmitter nor the receiver knows channel knowledge. The proposed scheme is based on the layered differential space-time codes we present. Simulation results show that the bit error rate (BER) performance is nonidentical in different channel propagation delay cases. The optimum delay time for two transmit antennas system, for example, is about 0.6Ts (where Ts denotes symbol period) when the links achieve better performance.