Multiple polarized MIMO with antenna selection

Outage probability analysis and adaptive combiner for multiuser multipolarized antenna systems

“…The channel matrix is represented in terms of horizontal (h) and vertical (v) polarizations, such that elements h h,v andh v,h correspond to the cross-polarized components (horizontal to vertical and vertical to horizontal polarization of waves) and elementsh h,h andh v,v are co-polarized components (horizontal to horizontal and vertical to vertical polarization of waves). Herein, we use the model provided by Bolcskei et al in [16] and also take useful insights from Habib et al [4] and Coldrey [5]. We express XPD as XP D = 1−α α , which is defined as the ratio of the average power received in a co-polarized channel to the average power received in a cross-polarized channel, whereas α is the ability of the antenna to separate orthogonal polarized waves and describes the joint effect of antenna characteristics and channel.…”

“…This is done by introducing a polarized antenna in the z-direction at both the transmitter and receiver and it is orthogonal to both the DP antennas in x-and y-directions. The TP system channel matrix H i can be written as [4]:…”

“…It is noteworthy that there exists only a limited number of works [2,4] in the literature that deal with the comparative analysis of DP and TP antenna systems. Specifically, the authors in [2] investigated the performance of DP and TP antenna systems based on experimental results for channel capacity.…”

“…However, they used a simulation setup in their investigation to compare the experimental work and did not provide a closedform expression. Moreover, the work in [4] dealt with the comparison of DP and TP antenna systems based on joint transmit and receive antenna selection and presented several results in terms of outage probability (OP).…”

“…On the other hand, a multipolarized antenna system has a low correlation even if it is co-located and hence it can be the best solution for realizing compact and robust devices [3]. Incorporation of dual polarized (DP) and triple polarized (TP) antennas with MIMO systems is also a strong candidate for existing and the upcoming fifth generation (5G) wireless communication systems [4,5]. It is to be noted here that the work in [4] makes use of TP antennas to utilize an extra degree of freedom and high data rates.…”