Intelligent Reflecting Surface Assisted Beam Index-Modulation for Millimeter Wave Communication

Abstract

Millimeter wave communication is eminently suitable for high-rate wireless systems, which may be beneficially amalgamated with intelligent reflecting surfaces (IRS), relying on beam-index modulation. Explicitly, we propose three different architectures based on IRSs for beam-index modulation in millimeter wave communication, which circumvent the line-of-sight blockage of millimeter wave frequencies. We conceive both the optimal maximum likelihood detector and a lowcomplexity compressed sensing detector for the proposed schemes. Finally, the schemes conceived are evaluated through extensive simulations, which are compared to our analytically obtained bounds.

Differential Reflecting Modulation for Reconfigurable Intelligent Surface-Based Communications

“…Combing index modulation techniques with RIS, an RISbased space shift keying scheme was shown to enables highly reliable transmission with unconventionally high energy efficiency in [12]. More recently, Gopi et al in [13] designed three RIS-based architectures for beam-index modulation in millimeter wave communication to circumvent the line-ofsight blockage of millimeter wave frequencies.…”

Passive beamforming design for intelligent reflecting surface assisted MIMO systems

“…Intelligent reflecting surface (IRS) based techniques are capable of further enhancing the system's performance at a low hardware complexity and power consumption [2][3][4]. IRS-assisted MIMO systems rely on passive elements for reflecting the incident signals with a particular phase shift [5][6][7]. The joint design of the active baseband beamforming and passive IRS-assisted beamforming has a substantial further promise.…”