Full-Azimuth Beam Steering MIMO Antenna Arranged in a Daisy Chain Array Structure

Area of Science:

• Wireless Communication Systems
• Antenna Array Design
• Signal Processing

Background:

• Vehicular communication systems require high data rates and reliable connectivity.
• Traditional antenna systems face challenges in achieving full-azimuth coverage and high throughput simultaneously.

Purpose of the Study:

• To develop a multiple-input, multiple-output (MIMO) antenna system capable of full-azimuth beam steering.
• To achieve vehicular communication data rates exceeding 20 Gbps.

Main Methods:

• Designed a 64-element MIMO antenna in a daisy chain array structure.
• Formed 32 independent subarrays for parallel data transmission.
• Utilized optimum in-phase excitation and orthogonal array alignment.

Main Results:

• Achieved a channel capacity exceeding 200 bits/s/Hz at 30 dB SNR over the full azimuth.
• Demonstrated equivalent data rates of 20 Gbps for a 100 MHz bandwidth.
• Confirmed constant transmission rates across all azimuth angles via over-the-air experiments.

Conclusions:

• The proposed MIMO antenna system effectively enables high-speed, omnidirectional vehicular communications.
• Optimized antenna design and excitation significantly enhance channel capacity and directivity.
• The system provides a robust solution for future high-bandwidth mobile communication needs.