[Discuss-gnuradio] Questions on gr_ofdm_mapper_bcv.*

[Brook Lin]

Hi All,

I saved gr_ofdm_mapper_bcv.* files as other name say
gr_new_ofdm_mapper_bcv.* in the same directry, because I need some
modification based on these later. After that, I did
/gnuradio/gnuradio-core/src/lib$ make
/gnuradio/gnuradio-core/src/lib$ sudo make install

I don't know whether I need make and make install to let
gr_new_ofdm_mapper_bcv.* work. Actually, I don't know how to get
gr_new_ofdm_mapper_bcv.* play their role. However, when I run
$sudo ./benchmark_ofdm_tx.py -f 460M -T A --tx-amplitude 5000 -v -i 128
--fft-length 128 --occupied-tones 100 --cp-length 32

I got error 
terminate called after throwing an instance of 'std::invalid_argument'
  what():  gr_ofdm_mapper_bcv: occupied carriers must be <= fft_length
Aborted

Before any change here, benchmark_ofdm_tx.py works fine. Could anyone advise
me? Thanks so much!
-Brook

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