International Symposium on Telecommunication (IST)

Home / 11th International Symposium on Telecommunication (IST'2024)

MIMO Transceiver with Ultra-Power-Efficient Analog-Based Processing Toward Tbps Wireless Communication

Authors :

Mir Mahdi Safari¹ Jafar Pourrostam² Seyed Hosein Mousavi³

1- University of Tabriz 2- University of Tabriz 3- University of Tabriz

Keywords :

MIMO،Tbps communication systems،power consumption،ADC،analog signal processing،receiver design

Abstract :

As the demand for higher data rates continues to grow, achieving terabit-per-second (Tbps) wireless communication has become a critical goal for next-generation networks. However, conventional digital systems struggle to efficiently utilize the ultra-wide bandwidths required for Tbps wireless communication. Specifically, the power consumption of ultra-fast, high-precision analog-to-digital converters (ADCs) for such wide bandwidths becomes impractical. This challenge is even more pronounced in traditional fully digital receiver designs for multiple-input multiple-output (MIMO) technology, where each receiver antenna necessitates a separate ADC. To address these challenges, we propose two analog-based, ADC-less approaches for MIMO receiver design. In our first approach, an analog combiner leverages the gains of each fading channel path by selecting the one with the maximum signal-to-noise ratio (SNR). Channel equalization and detection are then performed in the analog domain to calculate the log-likelihood ratio (LLR). In the second approach, we introduce procedures to estimate the channel phase in the analog domain and propose an analog equivalent of a maximum ratio combining (MRC) combiner. The equalizer block is implemented separately due to the phase estimation of the down-converted channel. Our proposed methods achieve the performance of counterpart digital approachs while offering more than 41× power savings.