TrellisWare

Description

TrellisWare’s technologies and products all share a common foundation: using all the information available, in all of the processing, all of the time. While this may sound intuitively obvious, virtually every receive processing system designed in history breaks the process into pieces designed to operate independently or interconnected with simple feedback loops for sequential processing. TrellisWare applies likelihood techniques, such as joint maximum likelihood and adaptive iterative detection, to extract more information and use it globally, enabling our products to work where others do not. When environments rarely change or they change slowly, sequential processing provides receive processing results that are good and may be sufficient. However when environments change abruptly – whether due to multipath, obscurants in the path, dynamics or the operating environment – traditional sequential feedback can actually make things worse, since the information is often out-of-date before it is used. TrellisWare’s likelihood processing technologies (e.g., Per Survivor Processing [PSP] and Adaptive Iterative Detection [AID]) essentially remove the feedback while applying the information globally throughout the processing and avoid the potentially catastrophic failure modes of traditional sequential feedback approaches. TrellisWare has extended this philosophy across all of our products, in our FEC designs, our waveform designs and in our cross-layer MAC architectures. The result is solutions that work where everything else fails, especially when degradation sources such as high dynamics, interference and multipath are severe and the communication system needs to adjust seamlessly to rapid changes in the operating environment.

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