Products
ConnX Baseband Engine for LTE
Product Briefs
HiFi 2 Audio DSP Product Brief
White Papers
Cut DSP Development Time - Get High Performance From C, No Assembly Required
Optimizing a DSP Architecture for Wireless Baseband
A Designers Guide to HD Video Pre- and Post-Processing
Put Low-Power, Low-Overhead, High-Fidelity Digital Sound in Your Next ASIC or SOC
See our complete white paper library
Analyst Reports
Tensilica DSP Targets LTE Advanced - Microprocessor Report review of ConnX BBE64
Tensilica Plays Baseband - New ConnX Core Aims for Low-Power Wireless Communications - Microprocessor Report review of ConnX BBE16
Tensilica Xtensa LX Processor with Vectra LX - BDTI
Ideal for LTE
Other DSPs can't handle the intense computation required for LTE. The ConnX Baseband Engine gives the performance needed for LTE baseband designs. Let's take a look at where you might want to use the ConnX Baseband Engine in the LTE receive chain.
LTE Receive Chain (click here for larger version)
The boxes outlined in red are particularly applicable for the ConnX Baseband Engine. You could also use Xtensa customizable processors for the forward error correction in the turbo decoder and HARQ process in the green boxes.
eNodeB and eHNB (basestations: macro, mini, pico and femto) can be efficiently implemented on a cluster of ConnX Baseband Engines. LTE Cat5 can be achieved due to fast interconnects with dedicated memory between processors.
LTE user equipment (UE: handsets, data cards) can be efficiently implemented with ConnX Baseband Engines and other Tensilica customized cores acting as Dataplane Processors (DPUs).
The current standard (Rel-*) has many modes and frequency bands and is evolving (Rel-9, LSTI). Full custom hardware would require extremely complex state machines - it's much easier to implement these complex functions in processors. Also, field ugrades during the trial phase is critical for time to market - and only processor-based solutions allow these upgrades.
The biforcation of standards (between TDD and FDD, for example) in various countries naturally fit processor-based designs for critical parts of the baseband.
