Array Beamforming Enabled Wireless Communications

Array beamforming technology is used in commercial communication systems like 5G and WiFi 6, with broad application prospects. It covers signal processing principles and challenges in communication systems, offering solutions and guidance for future research.

Format: Hardback
Length: 448 pages
Publication date: 31 March 2023
Publisher: Taylor & Francis Ltd

The field of array beamforming technology has seen significant advancements in recent years, with applications in various commercial communication systems such as 5G communication and WiFi 6. With its promising prospects for future communication systems, it is crucial to understand the underlying principles of array signal processing and address the emerging technical challenges. This paper aims to provide a comprehensive overview of array beamforming technology, covering its basic principles, recent developments, and potential applications.

Array signal processing is a fundamental technique in communication systems that involves the manipulation of signals received by multiple antennas to enhance communication performance. By leveraging the spatial diversity of the antenna array, array beamforming can achieve beamforming gains, which refer to the improvement in signal-to-noise ratio (SNR) or other performance metrics.

One of the key challenges in array signal processing is channel estimation, which involves estimating the channel state information (CSI) of the communication channel. CSI includes information about the channel amplitude, phase, and delay, which are essential for achieving optimal beamforming. Several channel estimation techniques, such as least squares (LS) estimation, maximum likelihood (ML) estimation, and particle filter (PF) estimation, have been developed and are widely used in array beamforming.

Codebook design is another critical aspect of array beamforming. A codebook is a set of pre-defined signal patterns that are used to transmit information over the communication channel. The codebook design should be such that it minimizes the bit error rate (BER) while maximizing the spectral efficiency of the system. Several codebook design techniques, such as uniform codebooks, block codebooks, and sparse codebooks, have been proposed and are being studied for their performance in different communication scenarios.

Point-to-point transmission is a common application of array beamforming technology. In this application, a single transmitter sends information to a single receiver over a communication channel. By using array beamforming, the transmitter can achieve beamforming gains, which can improve the quality of the received signal and reduce the interference from other sources.

Multiple access is another challenging application of array beamforming technology. In multiple access systems, multiple users share the same communication channel. By using array beamforming, the transmitter can optimize the transmission power and beamforming patterns to minimize the interference to other users while ensuring the desired quality of service (QoS) for each user.

Networking is another area where array beamforming technology has significant potential applications. In networking scenarios, multiple access points (APs) are used to provide wireless connectivity to users. By using array beamforming, the APs can optimize the transmission power and beamforming patterns to improve the coverage and quality of service of the network.

In conclusion, array beamforming technology has broad application prospects in future communication systems. With its ability to enhance communication performance by leveraging the spatial diversity of antenna arrays, it is expected to play a significant role in the development of next-generation communication networks. However, there are still many technical challenges that need to be addressed, such as channel estimation, codebook design, point-to-point transmission, multiple access, and networking. By continuing to research and develop new techniques in array signal processing, we can hope to achieve even greater improvements in communication systems.

Dimension: 254 x 178 (mm)
ISBN-13: 9781032430881