Golden Navigation: LTE dual-polarized antenna? How much do you know about the performance comparison with single-polarized antenna?

    Shenzhen Jinhangbiao Electronics Co., Ltd.(SHENZHENKING HELMELECTRON CO., LTD.) was established in 2007. It is a national high-tech and dual-software certified enterprise, a senior member of the "China Satellite Navigation Association", an enterprise that has obtained the ISO9001 (04617Q13625ROS) quality management certification system, and is improving the IATF16949 automotive quality management system. The main business is the R&D, production and sales of Beidou satellite navigation and Internet of Things terminal application hardware, and the provision of www.BDS666.com logistics information intelligent system solutions.

So, next, the editor of Golden Navigation Electronics will talk to you: LTE dual polarizationantennaComparison with single polarization antenna performance

LTE defines seven multi-antenna transmission modes, including transmit diversity, precoding-based MIMO, beam forming, etc. The seven transmission modes defined by LTE are mainly to consider the flexible selection of transmission modes under different scenarios and different channel models. Usually the bottlenecks and shortcomings of wireless mobile communication network performance are divided into the following three categories:

 1. Power limited system:

Typical application scenarios: The main purpose is to increase coverage and overcome fading, such as effective areas, wide coverage in rural areas, etc.

Type of antenna technology used: transmit diversity, receive diversity

Performance gap: The performance improvement of the 10λ single-polarized antenna is less than 5% compared to the dual-polarized antenna, and the performance gap between the two is not big.

2. Interference limited system:

Typical application scenarios: Mainly used in dense urban areas, where the distance between stations is relatively small. Interference is a major factor affecting network performance.

    采用天线技术类型：RANK=2MIMO双流，RANK=1MIMO单流，RANK自适应

Performance gap: RANK adaptive algorithm is significantly better than MIMO forced dual-stream; at the same time, the performance of dual-polarized antennas is basically the same as that of 10λ single-polarized antennas.

3. Bandwidth-limited system:

Typical application scenarios: The channel conditions (CQI) are relatively good, there is no continuous coverage between base stations, the distance between base stations is relatively large, and the number of users is relatively sparse. For example: single cell coverage in the early stage of the experimental network, etc.

Antenna technology type adopted: RANK=2MIMO dual stream

Performance comparison: The performance of 10λ single-polarized antenna is better than that of dual-polarized antenna, and the performance improvement is about 20%

The above is all the content shared by the editor of Jinhangbiao Electronics. I hope it will be helpful to everyone. Thank you for reading!