Coordinated multi-point decoding with dual-polarized antennas

Abstract

Abstract-Coordinated multi-point processing has shown great potential for cellular networks, while multiple antenna systems (MIMO) is the key to next generation wireless communications. Full exploitation of MIMO technology, however, demands high antenna separation at the transceivers. This paper investigates the use of dual polarized antennas as a mean to overcome hardware size limitations. Uplink ergodic sum-rate capacity of a multicell joint processing (MJP) system employing dual polarized antennas is evaluated through theoretical analysis. Results are supported by numerical simulations. The designed system incorporates uniformly distributed users, path loss and Rayleigh fading, thus extending the well known Wyner model. Optimal and MMSE receiver architectures are compared in terms of capacity and complexity. System capacity is calculated with respect to cell size or cross polar discrimination (XPD). The results support the use of dual-polar decoding for low XPD, dense cellular systems while per polarization processing is acceptable in high XPD, sparse systems.

Exploiting Polarization for Spectrum Sensing in Cognitive SatComs

“…where λ th is the decision threshold. The expression for P f can be computed using (6) to evaluate (7) and can be written as:…”

“…The concepts of spectrum sharing in the frequency, time and spatial domains have been considered in much literature but the polarization domain has not been fully exploited. In existing literature, the polarization domain has been used for diversity and multiplexing purposes [4][5][6]. The use of the polarization domain for SS has not been investigated extensively and few research works have been reported in literature.…”

Spectrum sensing in dual polarized fading channels for cognitive SatComs

“…where γ is the average SNR. The average P d in Rayleigh fading case, denoted as P dr , can be calculated by averaging (9) over (10), which can be written as:…”

“…The concepts of spectrum sharing in the frequency, time and spatial domains have been considered in much literature but the polarization domain has not been fully exploited. In the existing literature, the polarization domain has been used for diversity and multiplexing purposes [8][9][10].…”

Exploiting Polarization for Spectrum Awareness in Cognitive Satellite Communications

“…In existing literature, the polarization domain has been used for diversity and multiplexing purposes [4][5][6]. The use of the polarization domain for SS has not been investigated extensively and few research works have been reported in literature.…”