Re: [Discuss-gnuradio] Problem post installing kit.ce/gr-lte

[Johannes Demel]

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Hi Daniele,

Run this script a few times. Some of those hier blocks are nested. The
script doesn't care about compiling them in correct order. So after 2
- - 3 times it should have everything. Unless something went wrong.

I recommend you open the 'top_level' flowgraphs and have a look at
them. The error messages tell you that some blocks are not connected.
You should be able to see how to connect them, though. In case a block
is missing, look for the corresponding hier block graph and compile it
in GRC. Don't forget to reload/restart GRC.

The whole flowgraph takes quite a lot of computational load. It is
intended to make it easy for users to play around with. It's not so
much optimized for speed. Though I'd be happy to merge contributions
here too. Long story short, I recommend to record samples and do
offline processing.

Cheers
Johannes

On 08.10.2015 09:22, Disco Daniele wrote:
> Hi! I have installed on Ubuntu box gr-lte and using the script
> python hier_block_install_helper.py I received the following
> message:
> 
> ['grcc', 'MIMO Decode PBCH 4 TX ant.grc'] ['grcc',
> 'lte_sss_sync.grc'] ['grcc', 'pbch_descrambler_37.grc'] ['grcc',
> 'MIMO OFDM RX.grc'] ['grcc', 'lte_ofdm_hier.grc'] ['grcc', 'MIMO
> PSS Sync.grc'] ['grcc', 'MIMO TOP FLOW.grc'] ['grcc',
> 'lte_cp_ffo_sync_hier.grc'] ['grcc', 'MIMO TOP FLOW plots.grc']
>>>> Error: Block key "lte_mimo_pre_decoder" not found in Platform
>>>> - grc(GNU Radio Companion) Error: Block key
>>>> "lte_mimo_pre_decoder" not found in Platform - grc(GNU Radio
>>>> Companion) Error: Block key "lte_mimo_pbch_demux" not found
>>>> in Platform - grc(GNU Radio Companion) Error: Block key
>>>> "lte_mimo_pbch_demux" not found in Platform - grc(GNU Radio
>>>> Companion) Error: Block key "lte_mimo_pbch_demux" not found
>>>> in Platform - grc(GNU Radio Companion)
> Validation failed:
> 
> Block - lte_mimo_ofdm_rx_0 - LTE MIMO OFDM RX(lte_mimo_ofdm_rx): 
> Source - out1(1): Port is not connected.
> 
> Block - lte_mimo_sss_sync_0 - LTE MIMO SSS
> sync(lte_mimo_sss_sync): Source - out1(1): Port is not connected.
> 
> Block - lte_mimo_sss_sync_0 - LTE MIMO SSS
> sync(lte_mimo_sss_sync): Sink - in1(1): Port is not connected.
> 
> Block - pbch_layer_demapper_vcvc_1 - Layer
> demapper(lte_layer_demapper_vcvc): Sink - in(0): Port is not
> connected.
> 
> Connection ( Block - lte_mimo_sss_sync_0 - LTE MIMO SSS
> sync(lte_mimo_sss_sync) Source - out0(0) Block -
> lte_mimo_estimator_0 - LTE MIMO estimator(lte_mimo_estimator) Sink
> - in(0) ): Source IO size "4800" does not match sink IO size
> "9600".
> 
> Connection ( Block - lte_mimo_sss_sync_0 - LTE MIMO SSS
> sync(lte_mimo_sss_sync) Source - out0(0) Block -
> lte_mimo_decode_pbch_0 - LTE MIMO Decode
> PBCH(lte_mimo_decode_pbch) Sink - in(0) ): Source IO size "4800"
> does not match sink IO size "9600". Error during file compilation. 
> ['grcc', 'MIMO TOP FLOW 4 TX ant.grc'] ['grcc',
> 'LTE_flowgraph_top_level.grc']
>>>> Warning: This flow graph may not have flow control: no audio
>>>> or RF hardware blocks found. Add a Misc->Throttle block to
>>>> your flow graph to avoid CPU congestion.
> ['grcc', 'MIMO estimator 4 TX ant.grc'] ['grcc',
> 'decode_bch_37.grc'] ['grcc', 'lte_pss_sync.grc'] ['grcc', 'MIMO
> PSS based freq sync.grc'] ['grcc', 'MIMO estimator.grc'] ['grcc',
> 'MIMO SSS Sync.grc'] ['grcc', 'lte_estimator_hier.grc'] ['grcc',
> 'decode_pcfich_37.grc'] ['grcc', 'MIMO Decode PBCH.grc'] ['grcc',
> 'decode_pbch_37.grc']
> 
> Could you help me to solve these errors? Like USRP I've used an
> Ettus B210 board.
> 
> Thank you
> 
> _____________________________________________ Telecom Italia | TIM
> 
> Daniele Disco Engeenering & Tillab - Wireless Access Wireless
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