![]() And remember that if you are doing all digital beamforming are these large antenna arrays, behind every antenna that transmits this signal, there is an RF analog chain, wideband chain that requires a large amount of power and complexity. And massive MIMO essentially means that you're using very large antenna rays in order of much about 64- 64, 128, 256, and so on. This is an approach that works with 5G, especially at millimeter wave. You're using high carrier frequencies, larger bandwidth and large antenna arrays. And then you have to constantly update your channel characteristics and your models. And also, you need scatter-rich propagation environments in order to make this viable or if you have systems possible. And you have to seriously look at multicarrier systems like OSTM, OSTMA, and channel estimation equalization in order to combat the effect of frequency selective fading. Systems with very broad bandwidth, the frequency selective fading becomes a real problem. The minute you decide to go to millimeter wave and higher frequencies, the simple intonation becomes a real problem. Now, all these things are not without challenges. And with using that, you have large swaths of bands available for you, and you can essentially achieve the high throughputs you want. Instead of working at the typical below 6 gigahertz frequencies in the 4G and before similar communication systems, we are going beyond the millimeter again. And that's one of the main themes that 5G will exhibit. And also, you can use small cells such that you can essentially use MIMO techniques to achieve better received power and performance.Īnother approach is also using a higher frequency band. In this case, it means using multi-carrier communication systems that use OSM or OSDMA and multi-user MIMO. That's called better spectral efficiency, how much more bits per second can you use per Hertz. And you can also squeeze more from a given Hertz of bandwidth. You can essentially increase your throughput. You can increase the bandwidth by using your signals, a larger bandwidth. So I might think of the solutions that have been proposed is the following. And that is the challenge that the networks that are going towards 5G is dealing with right now, how do we substantially increase the throughput and data rates over our mobile communications As you know, 5G has multiple use cases, and one of the most familiar use cases is the 5G enhanced mobile broadband. Let's go over to enabling technologies of 5G. Finally, I'm going to provide some summary. In some direction is the analog, and in some direction is the digital approach.įinally, you have to design the RF front-end in order to improve your performance, and for that, we have tools in MathWorks that help you characterize the power amplifiers and design DPDs and other elements that related to RF transmission chain. The complexity and the power consumption of a fully digital beamforming, can be mitigated by using hybrid beamforming approaches that divide the beamforming into two modes. Which brings us to the third topic, the antenna array design and the MATLAB tools we have to not only design antenna elements as well as antenna arrays that help with characterizing or beamforming performance. When you are working with beamforming scenarios, you have to be aware of the effect of channels on propagation environment, and you also have to design precoders that specially direct your transmissions. ![]() This second topic is all about channel modeling and precoding. The first section is all about 5G waveform generation. After some introductory remarks, I essentially going to present five different sections related to 5G beamforming. Let's go over the agenda of this presentation. And it is my pleasure to welcome you to this MathWorks webinar entitled 5G Beamforming Design. I'm the product manager for the wireless products and MathWorks including 5G, LTE, wireless LAN, and communications toolboxes.
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