Advanced

Turbo Decoder with early stopping criteria

Ljunger, Henrik LU (2016) EITM01 20152
Department of Electrical and Information Technology
Abstract
The turbo code used in the 3GPP Long Term Evolution(LTE) standard have been
chosen specifically to simplify parallel turbo decoding and thus achieving higher
throughputs. The higher data rates however leads to an increased computational
complexity and thus a higher power and energy consumption of the decoder.
This report presents a turbo decoder for the LTE standard with a stopping crite-
ria aimed to reduce the power and energy consumption of the turbo decoder. The
decoder can be configured to use 1,2 ,4 ,8 or 16 MAP decoders in parallel achiev-
ing a throughput of 110 Mb/s for 7 iterations when running at a clock frequency
of 200 MHz. The decoder were synthesised with 65 nm low power libraries with
an area of 1.6 mm 2 . The... (More)
The turbo code used in the 3GPP Long Term Evolution(LTE) standard have been
chosen specifically to simplify parallel turbo decoding and thus achieving higher
throughputs. The higher data rates however leads to an increased computational
complexity and thus a higher power and energy consumption of the decoder.
This report presents a turbo decoder for the LTE standard with a stopping crite-
ria aimed to reduce the power and energy consumption of the turbo decoder. The
decoder can be configured to use 1,2 ,4 ,8 or 16 MAP decoders in parallel achiev-
ing a throughput of 110 Mb/s for 7 iterations when running at a clock frequency
of 200 MHz. The decoder were synthesised with 65 nm low power libraries with
an area of 1.6 mm 2 . The post-synthesis simulations shows that the stopping cri-
teria can lead to a significant lower energy consumption with no performance
loss. (Less)
Popular Abstract
The cellular market are constantly growing
with more users every day. Today the smart-
phone and tablet are common commodities
which are able to both stream music as well as
high definition video. The increasing amount
of user in combination with the increasing
data rate requirements puts high demands
on the mobile operators networks. However
the frequency spectrum is crowded with dif-
ferent competing technologies and thus the
available bandwidth are scarce. Ensuring a
reliable communication and efficient use of
the available resources are thus vital.
Please use this url to cite or link to this publication:
author
Ljunger, Henrik LU
supervisor
organization
course
EITM01 20152
year
type
H2 - Master's Degree (Two Years)
subject
keywords
LTE Turbo Decoder Low Power Stopping Criteria
report number
LU/LHT-EIT 2016-551
language
English
id
8894565
date added to LUP
2016-11-22 08:55:04
date last changed
2016-12-06 15:16:28
@misc{8894565,
  abstract     = {The turbo code used in the 3GPP Long Term Evolution(LTE) standard have been
chosen specifically to simplify parallel turbo decoding and thus achieving higher
throughputs. The higher data rates however leads to an increased computational
complexity and thus a higher power and energy consumption of the decoder.
This report presents a turbo decoder for the LTE standard with a stopping crite-
ria aimed to reduce the power and energy consumption of the turbo decoder. The
decoder can be configured to use 1,2 ,4 ,8 or 16 MAP decoders in parallel achiev-
ing a throughput of 110 Mb/s for 7 iterations when running at a clock frequency
of 200 MHz. The decoder were synthesised with 65 nm low power libraries with
an area of 1.6 mm 2 . The post-synthesis simulations shows that the stopping cri-
teria can lead to a significant lower energy consumption with no performance
loss.},
  author       = {Ljunger, Henrik},
  keyword      = {LTE Turbo Decoder Low Power Stopping Criteria},
  language     = {eng},
  note         = {Student Paper},
  title        = {Turbo Decoder with early stopping criteria},
  year         = {2016},
}