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#1 2013-May-27 09:50:30

Xilkernel
Member
Registered: 2012-Oct-10
Posts: 4

Reception time for QAM16 & QAM64 packets

Hello,
The execution time of function warpmac_finishPhyRecv() on WARP v1.2 board and OFDM reference design v16.01 is almost same for QAM16 and QAM64 packets with different payload sizes ranging from 0 bytes to 1500 bytes. I found this strange because this function takes different execution times for BPSK and QPSK packets. QPSK packets need approximately twice the time needed by BPSK packets. Does receiver IP core take same time to finish reception for QAM16 and QAM64 packets?

Last edited by Xilkernel (2013-May-27 09:50:53)

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#2 2013-May-27 10:01:08

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: Reception time for QAM16 & QAM64 packets

The OFDM ref design v16+ doesn't implement 64-QAM. The PHY was likely transmitting at 16-QAM in both tests, hence the same Tx durations.

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