Photon Orbital Angular Momentum (OAM) is a new technique to increase wireless channel capacity. However, not everyone agrees that this is a conceptually new area in radio communication and they make the case that OAM is a special mode of MIMO communications. This view was presented in a recent IEEE Transactions on Antennas & Propagation… Read More »
In some of my recent postings, I wrote about the limits of the physical layer and what that means for the future of wireless communications systems. Here, I like to mention new research that has promise of increasing the capacity of the physical layer. This new work is based on exploiting a property of electromagnetic… Read More »
Just back home from MWC’12… What a show this year… Over 67,000 attendees and some 1500 exhibitors, and some student protests in the mix… It was the biggest to date and a good finale for the Fira before moving next year to a new nearby location. For those in the mobile infrastructure space, long gone… Read More »
I was recently asked by a business associate how to estimate the capital costs of an LTE network. Inevitably our discussion led to estimating the number of sites required to cover a market. Designing to meet coverage requirements along with its complement, capacity requirements, form the basis for estimating the size, and consequently cost, of the radio access network. This is something that differentiates the financial modeling service provided by Telesystem Innovations. So I like to expand in this post on a few general principles related to path loss models which play a critical part is determining cell size.
The numbers for mid-2011 are in and the big picture for mobile network operators is clear: overall ARPUs continue to decline led by declining voice service revenue. Data service revenue continues to grow, but not at a sufficient rate to compensate for the decline in voice revenue. In fact, data services which on average constitutes a about a third of ARPU fail to stabilize ARPU and hold off the erosion.
I started this blog in 2011 to share my insights into the technology impact on the wireless industry. I did this for two reasons: I am interested in the impact of technology on business, markets and society. I like to share what I learn with the others and generate a discussion on points of common… Read More »