Using signal compression to ease migration to a 4G wireless infrastructure

By Allan Evans, Samplify Systems
pldesignline.com (October 20, 2008)

Through the use of multiple-antenna technologies and orthogonal-frequency-division-multiplexing, fourth generation wireless technologies such as Long-Term Evolution (LTE), WiMAX, and Super3G will offer much greater capacity to mobile customers. However, what represents a tremendous opportunity for mobile customers for faster downloads, video at higher frames rates and resolution, and streaming audio, also poses challenges to the CAPEX structure for the mobile operator, particularly in the fiber optic transport to their radio heads.

In fact, mobile operators can end up spending as much in wireline technology as they do for wireless technologies with 4G. To address these challenges, signal compression technology offers the promise of reducing the bit rates for carrying baseband data to the radio elements, and therefore keeping fiber optic transport costs in line with existing 3G systems.

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