1. Proposed Text for DL subcarrier permutation and UL tile permutation
IEEE Presentation Submission Template (Rev. 9)
Document Number:
IEEE C802.16m-09/0582
Date Submitted:
Source:
Taeyoung Kim, Jeongho Park, Kichun Cho, Jaeweon Cho, Voice:
Hokyu Choi , Heewon Kang
Samsung Electronics Co., Ltd.
416 Maetan-3, Suwon, , Korea
Jong-Kae (JK) Fwu, Minh-Anh Vuong, Huaning Niu, Rongzhen Yang,
Yuval Lomnitz, Wei Guan, Sassan Ahmadi, Hujun Yin
Intel Corporation
Venue:
IEEE m Session#60, Vancouver, Canada
IEEE m-09/0012, “Call for Comments on Amendment Working Document”.
Base Contribution:
None
Purpose:
Discussion and Approval
Notice:
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3. Motivation
In the current IEEE m Amendment Working Document (IEEE80216m-09/0010),
Subcarrier permutation for DL is NOT determined yet.
This contribution shows the evaluation results under the multicell environment to compare the permutation rules proposed from many companies (e.g. Intel, LGE, Samsung)
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4. LLS in Multi-cells environment (1)
Cell ID Configuration
Increasing sector ID
ISD = 1.5km
Evaluation methodology
User drop on the desired cell, which is located in (radius, theta)
# of IDcell for desired cell = 0
Radius is variable, but theta is fixed as 30 degree
Varying parameter of “radius”
Select 7 strongest interferers
Calculating only path-loss according to the distance between MS and BSs.
Not considering shadowing
Calculate SINR 1 2 3 6 7 9 10 11 13 14 15 16 17 18 20 21 23 24 25 26 27 28 30 31 32 33 34 35 36 37 38 49 40 41 42 43 44 45 46 47 48 50 51 52 53 54 55 56 5 4 8 19 22 29 12 MS
[ Example]
MS is located in (radius, theta) = (0.75*ISD/2, 30)
7 strongest interferers(I1~I7) = 8, 19, 5, 4, 12, 22, 29
SINR=6.36dB

5. LLS in Multi-cells environment (2)
Simulation conditions
Working scenarios
Number of DRUs / LRUs / Miniband allocation
Half loading in DRUs(Ex. # of DRUs = 8, # of LRUs = 4)
Half loading in Miniband based CRU
Assuming random QPSK modulated data bursts are transmitted
Assuming random sequence for CRU/DRU allocation sequence
Channel condition: PedB, 3km/h
MIMO configuration: 2x2 SFBC
Pilot Structure
Pilot power = 3 dB
Interlaced pilot structure
Freq. Partition
# of subbands
# of minibands
# of PRUs in FPi
Scenario #1
FP0 6 24 48
FP1 ~ FP3

6. FER vs SINR (1)
Evaluation Results
# of DRUs=4
# of DRUs=5

7. FER vs SINR (2)
Evaluation Results
# of DRUs=6
# of DRUs=7

8. FER vs SINR (3)
Evaluation Results
# of DRUs=8
# of DRUs=9

9. FER vs SINR (4)
Evaluation Results
# of DRUs=10
# of DRUs=11

10. Conclusion
Most of permutation rules proposed by Intel, LGE and Samsung show the similar FER performance under the multicell environment
Considering the facility of deployment, the permutation sequence randomly generated by IDcell should be necessary
For UL, it is natural to be same as DL formula and permutation sequence.

11. Proposed Text for AWD (1)
[Remedy-1: Change the text from line 35 to 38 on the page 31, in , as follows:]
PermSeq() is the permutation sequence of length LDRU,FPi and is determined by SEED={IDcell*1367} mod 210. The permutation sequence is generated by the random sequence generation algorithm specified in Section generated by a function or by a lookup table;
g(PermSeq(),s,m,l,t) is a function (TBD) with value from the set [0, LDRU, FPi -1], which is defined as follows.;
g(PermSeq(),s,m,l,t) = {PermSeq[{f(m,s)+s+l} mod LDRU,FPi] +DL_PermBase} mod LDRU,FPi,
where DL_PermBase is an integer ranging from 0 to 31(TBD), which is set to preamble IDcell.
f(m,s) = (m+13·s) mod LSP,l. is a function (TBD) with value from the set [0, LSP,l -1].
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12. Proposed Text for AWD (2)
[Remedy-2: Insert the text in line 48 on the page 31, in , as follows:]
Random sequence generation
The permutation sequence generation algorithm with 10-bit SEED (Sn-10, Sn-9,…,Sn-1) shall generate a permutation sequence of size M by the following process:
Initialization
Initialize the variables of the first order polynomial equation with the 10-bit seed, SEED.
Set d1 = floor(SEED/25) + 1 and d2 = SEED mod 25.
Initialize the maximum iteration number, N=4.
Initialize an array A with size M with the numbers 0, 1, … , M-1 (i.e. A[0]=0, A[1]=1, … , A[M-1]=M-1).
Initialize the counter i to M-1.
Initialize x to -1.
Repeat the following steps if i > 0
Initialize the counter j to 0.
Repetition loop as follows,
Increment x and j by 1.
Calculate the output variable of y = {(d1*x + d2) mod 1031} mod M.
Repeat the above step a. and b., if yi and j<N.
If y  i, set y = y mod i.
Swap the i-th and the y-th elements in the array (i.e. perform the steps Temp= A[i], A[i]= A[y], A[y]=Temp).
Decrement i by 1.
PermSeq[i] = A[i], where 0i<M.
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13. Proposed Text for AWD (3)
[Remedy-3: Change the text in line 1 on the page 42, in , as follows:]
Tile(s,n,t) = TBD LDRU,FPi  n + g(PermSeq(), s, n, t)
PermSeq() is the permutation sequence of length LDRU,FPi and is determined by SEED={IDcell*1367} mod 210. The permutation sequence is generated by the random sequence generation algorithm specified in Section
g(PermSeq(),s,n,t) is a function of s, n, t and PermSeq(), which is defined as follows:
g(PermSeq(),s,n, t) = {PermSeq[(n+s+t) mod LDRU,FPi]+UL_PermBase} mod LDRU,FPi,
where UL_PermBase is an integer ranging from 0 to 31(TBD), which is set to preamble IDcell.
[Remedy-4: Insert the text in line 13 on the page 42, in , as follows:]
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