Signal generation for Wi-SUN and LTE/LTE-Advanced

August 11, 2014 // By Graham Prophet
Keysight Technologies – formerly Agilent – has announced two additions to its Signal Studio software suite of signal creation tools; signal generation software for the IEEE 802.15.4g-based Wi-SUN standard; and support for LTE/LTE-Advanced uplink (UL) 2x2 MIMO with real-time Hybrid Automatic Repeat Request (HARQ).

These capabilities ease the signal generation requirements for R&D and manufacturing engineers developing or testing the conformance of devices to the Wi-SUN and LTE/LTE-A standards.

Keysight's N7610B Signal Studio software generates Wi-SUN signals and supports the MR-FSK and MR-OFDM Wi-SUN modes. A fully coded advanced capability allows the software to make receiver conformance tests using Keysight signal generators (e.g., MXG/EXG, PSG/ESG or PXIe). For a more complete R&D and manufacturing solution, the N7610B can be used with Keysight signal analysis tools. Such functionality and flexibility make the N7610B well suited to support the needs of the emerging market for smart utility networks (e.g., smart grid) in Japan and those companies in the U.S. working on Wi-SUN-based solutions and products.

Based on the open global IEEE 802.15.4g-2012 standard, Wi-SUN is intended to advance and enable interoperable and reliable, cost-effective, low-power, wireless utility products for wireless smart utility networks and related applications. The 802.15.4g PHY carries multiple data rates in frequency bands from 450 MHz to 2.4 GHz and operates in three modes: 1) multi-rate multi-regional frequency shift keying (MR-FSK); 2) multi-rate orthogonal frequency division multiplexing (MR-OFDM); and 3) multi-rate multi-regional offset quadrature phase shift keying (MR-OQPSK).

N7624B/25B Signal Studio

The LTE-A fourth-generation wireless communications technology is defined in release ten and all follow-on releases of the 3GPP LTE standard. In the LTE eNB receiver conformance test section eight of release ten, a MIMO configuration with real-time HARQ capability on two antenna ports is required to test the physical uplink shared channel in transmissions with multipath fading propagation conditions.

With its support for uplink 2x2 MIMO with HARQ, the N7624B/25B Signal Studio for LTE/LTE-Advanced is equipped to meet this requirement. With this capability, the N7624B/25B becomes the first LTE UL 2x2 MIMO with real-time HARQ signal generation solution, and Keysight becomes the sole provider of the only complete LTE eNB receiver conformance test solution.

The N7624B/25B solution is ideal for base station