Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA...
Transcript of Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA...
![Page 1: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/1.jpg)
Interleave Division Multiple Access (IDMA)
by: Ahmed Altamimi
Supervisor:Dr. Lin Cai
![Page 2: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/2.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
![Page 3: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/3.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
What is IDMA?
Advantage of IDMA.
![Page 4: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/4.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
What is IDMA?
Advantage of IDMA.
![Page 5: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/5.jpg)
What is IDMA?
Receiver
User 1
User 2
User 3
User K
Multi User Channel(Physical Channel)
![Page 6: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/6.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
What is IDMA?
Advantage of IDMA.
![Page 7: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/7.jpg)
Advantage of IDMAInterference elimination.Increased diversity against fading.Very low receiver cost.De- centralized control (Asynchronous).Optimal Capacity.
Receiver
User 1
User 2
User K
Channel
![Page 8: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/8.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
CDMA Sending Mechanism.
IDMA Sending Mechanism.
Interleavers.
![Page 9: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/9.jpg)
CDMA Sending Mechanism
Data Signature
User10
1
User20
1
![Page 10: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/10.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
CDMA Sending Mechanism.
IDMA Sending Mechanism.
Interleavers.
![Page 11: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/11.jpg)
IDMA Sending Mechanism
Data Interleaver
User1 Interleaver1
User2 Interleaver2
![Page 12: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/12.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
CDMA Sending Mechanism.
IDMA Sending Mechanism.
Interleavers.
![Page 13: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/13.jpg)
InterleaversD
ata [0.1 0.2
0.2 0.40.3 0.60.4 0.80.5 1.0]
Inte
rlea
ver
[2 4 3 5 1]
Dat
a+In
terl
eave
r [0.2 0.40.4 0.80.3 0.60.5 1.00.1 0.2]
Multiple Access Channel
![Page 14: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/14.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
Transmitter Structure.
Receiver Structure.
![Page 15: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/15.jpg)
Transmitter
User1(d1)
Convoutionalencoder
(c1)
Repetition code
Interleaver(ᴫ1)
Modulation(BPSK)
Multiple Access Channel
User_K(dk)
Convoutionalencoder
(cK)
Repetition code
Interleaver(ᴫk)
Modulation(BPSK)
![Page 16: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/16.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
Transmitter Structure.
Receiver Structure.
![Page 17: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/17.jpg)
Receiver
Multiple Access Channel
MUD-----
Elementary Signal
Estimator ESE
Deinterleaver
(ᴫ1)User1 (d1)
APP Decoder
Repetition decoder
Interleaver(ᴫ1)
Repetitonencode
User (dk) Repetition
encode
Repetition decoder
Interleaver(ᴫk)
Deinterleaver
(ᴫk)APP Decoder
r
![Page 18: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/18.jpg)
Received Signal
R(j)= hk xk(j) + n(j) j=1,2,…,J Where:
hk : The fading coefficient related to user k.n(j): The additive white gaussian noise with zero
mean and variance = σ2 = N0/2.`
![Page 19: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/19.jpg)
Elementary Signal Estimator(ESE)
The output of ESE and DEC are extrinsic log-likelihood ratios (LLRs) about xk(j) defined as:
e(xk(j)) = log ( )
![Page 20: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/20.jpg)
Outline
IDMA Intro
IDMA Vs CDMA
IDMA Structure
Future Work
![Page 21: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/21.jpg)
Future Work
Complexity of the receiver.
Generating of interleavers.
![Page 22: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/22.jpg)
Conclusion
IDMA is a strong candidate to replace CDMA.
![Page 23: Interleave Division Multiple Access (IDMA) Ahmed …cai/IDMA.pdf · `IDMA Intro `IDMA Vs CDMA `IDMA Structure `Future Work What is IDMA? Advantage of IDMA.](https://reader031.fdocuments.us/reader031/viewer/2022021717/5b3451b27f8b9a436d8bde8b/html5/thumbnails/23.jpg)
Question!