Wednesday, March 26, 2014

Blog 18: Third Answer

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:

  1. 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.
  2. 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.
  3. 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.

No comments:

Post a Comment