Log in |

courses pages people
Department for Continuing Education logo
University of Oxford logo
Department for Continuing Education logo
Department for Continuing EducationUniversity of Oxford
icon representing professional development courses

Search results

LTE and HSPA Terminal RF Design Challenges

Key facts

TypesProfessional Development
Short Courses
Subject area(s)Electronic Engineering
Telecommunications Engineering
FeesFrom £395.00
Application statusDates to be confirmed - Accepting applications
Course codeO14C732H6Y
Course contactIf you have any questions about this course, please email telecoms@conted.ox.ac.uk.


We can accept registrations up to 2 days before the course start date if you provide a purchase order or credit/debit card details.

This course is day 4 of the LTE and LTE-Advanced: System Design and Operation course and can be taken on its own or as part of the 5-day course. For details of the full 5-day LTE, LTE-Advanced and HSPA Evolution: System Design and Operation course click here.

Please send me details about future LTE and HSPA Terminal RF Design Challenges courses.


With the explosion of frequency bands and band combinations, balancing the radio performance, hardware cost and total power consumption in the multi-mode multi-standard poses serious design challenges.

This session presents an overview of solutions and strategies put in place by chipset platform vendors to deliver cost efficient HPSA+, LTE and LTE-advanced terminals, with a focus on the radio-frequency (RF) subsystem and RF- Front-End (RF-FE) architectures.

We introduce modern transmitter and receiver chain RF architectures in detail, including co-existence scenarios within the numerous subsystems of the multi-band / multi-mode “world- wide” phone.

From a power consumption perspective, the modern smartphone performance is compared to the more traditional, voice centric feature phone. Design challenges in delivering the best compromise between performance and power consumption is briefly presented for two dominating contributors: Application Engine and cellular Power Amplifier, comparing average power tracking vs. envelope tracking.

A brief presentation of progress made in reducing power consumption across three recent generations of LTE chipset is also presented. Finally, we describe some of the specific challenges associated with the implementation of LTE-Advanced carrier aggregation platforms.

Programme details

Course content

Introduction to Multimode Multiband handset design challenges

- 3GPP frequency band evolution vs year vs mode and typical handset band support
- Worldwide phone frequency band requirements: dual-mode, vs triple-mode vs quad-mode

Cost reduction in Multimode Multiband terminals

- Evolution of Silicon Area and component count in single mode (GSM), dual-mode (GSM-HSPA), triple mode (GSM-HSPA-LTE) terminals
- RF transceiver architecture: 10 years of evolutions to reduce PCB area and component count
  • Solving the cost-performance trade-off by removing interstage SAW filters
  • Carrier-Aggregation (CA) challenges: impact on complexity and TX noise requirements
- RF front-end evolutions
  • Trends in filters and RF switches over the last 10 years
  • Front-end Module integration evolution in recent smartphones
  • RF multiplexing strategies to address CA: duplexer bank vs quadplexers vs hexaplexers
- Power Amplifiers: single band discrete PAs vs Multi-mode Multi-band PAs
  • Example of trade-offs applied to a North-American triple mode design
  • Reconfigurability concept with MMMB PA modules
  • Cost savings: discrete PA vs MMMB PA in triple mode NA variant example
- Over the Air performance
  • WCDMA TRP TIS smartphone performance status
  • OTA performance challenges with MIMO operation
  • Antenna tuner & impedence tuner: cost performance trade-offs
- RF subsystem control and IQ interfaces: cost savings with MIPI interfaces
  • Example of cost savings using MIPI DigRF v4 and RFFE on a Carrier Aggregation RF subsystem
  • EMI control and coexistence design challenges
- More co-existence challenges
  • in single chip RF, BB, PMU devices
  • Within the RF subsystem: example of LTE CA band 4 - band
  • Between cellular and connectivity subsystems: example of GPS desense
  • Other co-existence associated with LTE operation

Power consumption reduction in MM MB terminals

  • Benchmark of recent triple mode chipsets
  • Voice centric feature phones vs smartphone power consumption evolution
  • Impact of screen related activity on power consumption
- Application Engines:
  • Trade-off between power consumption, user experience and performance: the example of ARM bigLITTLE
  • Design trade-off between performance, thermal runaway and PCB heatsink in bigLITTLE solutions
- Cellular Power Amplifier power supply control strategy
  • Gain switching vs average power tracking vs envelope tracking
  • IEEE and commercial handset benchmarking
- CPC DTX DRX impact on terminal power consumption - Impact of LTE DRX on terminal power consumption



Mr Laurent Noël

Role: Speaker

System Performance Analyst at Videotron, Canada, Mobile Devices Certification
(formerly Senior System Architect at ST-Ericsson)


Participants who satisfy the course requirements will receive a Certificate of Attendance. The sample is an illustration only.

Level and demands

This course is aimed at those who have already basic understanding of WCDMA technology and wish to get themselves up to date with the latest technology development.

The course is intended for engineers, those involved in RF systems design, radio planners, service developers and operators, equipment designers, telecoms consultants and 3G applications developers.

In addition, the course will appeal to technical managers, analysts and strategists wishing to increase their technical understanding of the key subject area currently in the limelight of the telecoms world.


Rewley House Accommodation

Accommodation is available at the Rewley House Residential Centre, within the Department for Continuing Education, in central Oxford. The comfortable, en-suite, study-bedrooms are rated 3-star, and come with free high-speed internet access and TV. Guests can take advantage of the excellent dining facilities and common room bar, where they may relax and network with others on the programme.


Fees include course materials, tuition, refreshments and lunches. The price does not include accommodation.

All courses are VAT exempt.

Fee options

Programme Fee
Standard course fee: £395.00

Apply for this course

If you would like to discuss your application or any part of the application process before applying, please contact:
Course Administrator
Tel: +44 (0)1865 286958
Email: telecoms@conted.ox.ac.uk

You can apply for this course in the following ways:

Apply by post, email or fax
PDF Application Form PDF document.

Terms & Conditions (important: please read before applying) PDF document.
Guidanece Notes (important: please read before applying) PDF document.

Programmes including this module

This module can be studied as part of these programmes:

facebook social media icon facebook social media icon facebook social media icon facebook social media icon

red box iconKeep me informed

By email
Receive our quarterly email newsletter and news of upcoming events

We're happy to answer your questions and to provide information!