Integrated MMDS + Wireless Internet System Description
Operators can now implement Analog or Digital MMDS systems with TV subscription services, broadband high-speed internet access services or both.
Existing MMDS systems can be upgraded or new systems can be designed as integrated systems from the beginning. The upgrade involves integrating Cable AML’s Broadband Wireless Access System to the existing MMDS video system.
Following is a simple block diagram of a integrated MMDS & Wireless Internet System Description:
The Integrated System block diagram is shown in the Figure. In a typical system implementation, one individual channel in the band is assigned to downstream data transport. Each downstream channel has capacity for one data carrier with a throughput of 30 Mbps (using 64-QAM modulation).
There are a number of options for the upstream (return) signal path. The upstream spectrum can be sub-divided into multiple channels, each with a bandwidth of wither 0.2 MHz, 0.4 MHz, 0.8 MHz, 1.6 MHz or 3.2 MHz. Each upstream channel provides an upstream data throughput of 0.32 to 5.12 Mbps with QPSK modulation format, or 0.64 to 10.24 Mbps with 16QAM-modulation format, depending on channel bandwidth.