EQ:
How can an RF Field Engineer best troubleshoot cellular coverage in a city?
Answer #3:
By troubleshooting the internal software within a Radio Base Station.
3 Details:
- Two key issues in the implementation of software radios are the development of optimal receivers that require the minimum number of bits in the wide-band analog-to-digital converter (ADC) and efficient channelizers that extract individual channels from the digitized wide-band signal.
- The idea of software radio is to place the analog-to-digital converter (ADC) as close as possible to the antenna, ideally right after the low noise amplifier (LNA) and bandpass filter (BPF), thus the remaining RF/IF functions, such as channelization, downconversion, synchronization, and filtering, can be performed digitally on a general purpose processors (GPP) to provide the full advantages of reconfigurability.
- The main advantage of software radio is flexibility. Application developers are interested in software radio because operating characteristics of the radio can be changed on-the-fly: frequency band, modulation scheme, error correction, etc
Research Source:
Lee, C. (2008). Power-efficient integrated cognitive and software radio system: Architecture, algorithms, and protocols. (Order No. 3299835, Princeton University). ProQuest Dissertations and Theses, , 202. Retrieved from http://search.proquest.com/docview/304508399?accountid=10357. (304508399).
Zangi, K.C.; Ericsson Inc., Traingle Park, NC, USA ; Koilpillai, R.D.
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