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Modern x86 is quite competent as DSP using AVX. I think you are exaggerating. I have worked with LTE baseband as well, but admittedly never done an x86 LTE PHY.
by kristoffer 11y ago
Modern x86 is quite competent as DSP using AVX. I think you are exaggerating. I have worked with LTE baseband as well, but admittedly never done an x86 LTE PHY. pCell claims to be doing quite complex network mimo LTE stuff on x86, still mostly vaporware though.
Regarding FPGA, of course you don't do the complete implementation in it, you accelerate the low level stuff, FFTs, coding, etc, as are already done in all baseband dsps.
- f00fc0d3 11y agoYep, AVX is nice, but still it is far from current DSP chips. I ported a subset of PHY to real AVX2 CPU and AVX512 sim. It is (sometimes) comparable to c6x (which is a crap DSP) if you take (much) higher clock into account, but comparing to current DSP IP cores it is a joke.