4.27.anotaipaiboon.ps

是multiuser detection 这本书的习题解答, 很有用的书.

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E end
%%EndProlog
%%BeginSetup
%%Feature: *Resolution 600dpi
TeXDict begin
%%PaperSize: Letter

%%EndSetup
%%Page: 1 1
1 0 bop 0 90 a Fh(4.27)0 268 y Fg(y)41 280 y Ff(1)101
268 y Fe(=)23 b Fg(A)p Fe(\()p Fg(b)319 280 y Ff(1)371
268 y Fe(+)15 b Fg(b)487 280 y Ff(2)524 268 y Fe(\))h(+)f
Fg(\033)s(n)26 b Fe(is)g(a)g(su\016cien)n(t)g(statistic)g(since)g(b)r
(oth)g(w)n(a)n(v)n(eforms)e(are)h(the)h(same.)36 b(The)26
b(bit)h(error)d(rates)h(for)h(b)r(oth)0 368 y(users)h(are)f(the)i(same)
f(b)r(ecause)g(of)h(the)g(symmetry)f(of)h(the)g(system.)0
493 y(\(a\))1256 592 y Fg(H)1325 604 y Fd(\000)p Ff(1)1437
592 y Fe(:)83 b Fg(y)26 b Fc(\030)1707 559 y Ff(1)p 1707
573 34 4 v 1707 620 a(2)1750 592 y Fg(N)9 b Fe(\()p Fc(\000)p
Fe(2)p Fg(A;)14 b(\033)2114 562 y Ff(2)2151 592 y Fe(\))19
b(+)2295 559 y Ff(1)p 2295 573 V 2295 620 a(2)2338 592
y Fg(N)9 b Fe(\(0)p Fg(;)14 b(\033)2575 562 y Ff(2)2612
592 y Fe(\))1307 692 y Fg(H)1376 704 y Ff(1)1437 692
y Fe(:)83 b Fg(y)26 b Fc(\030)1707 659 y Ff(1)p 1707
673 V 1707 720 a(2)1750 692 y Fg(N)9 b Fe(\(2)p Fg(A;)14
b(\033)2049 662 y Ff(2)2087 692 y Fe(\))k(+)2230 659
y Ff(1)p 2230 673 V 2230 720 a(2)2273 692 y Fg(N)9 b
Fe(\(0)p Fg(;)14 b(\033)2510 662 y Ff(2)2548 692 y Fe(\))0
884 y(The)28 b(optim)n(um)g(detector)f(is)927 862 y(^)930
884 y Fg(b)966 896 y Fb(k)1030 884 y Fe(=)22 b(sgn\()p
Fg(y)s Fe(\).)37 b(The)28 b(bit)g(error)d(rate)i(is)656
1106 y Fg(P)709 1118 y Fb(k)751 1106 y Fe(\()p Fg(\033)s
Fe(\))84 b(=)1106 1050 y(1)p 1106 1087 42 4 v 1106 1163
a(2)1158 1106 y Fg(P)12 b Fe(\()1252 1084 y(^)1255 1106
y Fg(b)1291 1118 y Ff(1)1351 1106 y Fe(=)22 b(1)p Fc(j)p
Fg(b)1539 1118 y Ff(1)1599 1106 y Fe(=)h Fc(\000)p Fe(1)p
Fg(;)14 b(b)1867 1118 y Ff(2)1925 1106 y Fe(=)23 b Fc(\000)p
Fe(1\))18 b(+)2263 1050 y(1)p 2263 1087 V 2263 1163 a(2)2314
1106 y Fg(P)12 b Fe(\()2408 1084 y(^)2411 1106 y Fg(b)2447
1118 y Ff(1)2507 1106 y Fe(=)23 b(1)p Fc(j)p Fg(b)2696
1118 y Ff(1)2756 1106 y Fe(=)f Fc(\000)p Fe(1)p Fg(;)14
b(b)3023 1118 y Ff(2)3082 1106 y Fe(=)23 b(1\))949 1309
y(=)1106 1253 y(1)p 1106 1290 V 1106 1366 a(2)1158 1309
y Fg(Q)p Fe(\()1266 1253 y(2)p Fg(A)p 1266 1290 104 4
v 1292 1366 a(\033)1379 1309 y Fe(\))c(+)1523 1253 y(1)p
1523 1290 42 4 v 1523 1366 a(2)1584 1253 y(1)p 1584 1290
V 1584 1366 a(2)949 1512 y(=)1106 1456 y(1)p 1106 1493
V 1106 1569 a(4)1176 1512 y(+)1269 1456 y(1)p 1269 1493
V 1269 1569 a(2)1321 1512 y Fg(Q)p Fe(\()1429 1456 y(2)p
Fg(A)p 1429 1493 104 4 v 1455 1569 a(\033)1542 1512 y
Fe(\))0 1748 y(\(b\))1460 1846 y Fg(H)1529 1858 y Fd(\000)p
Ff(1)p Fb(;)p Fd(\000)p Ff(1)1746 1846 y Fe(:)83 b Fg(y)26
b Fc(\030)d Fg(N)9 b Fe(\()p Fc(\000)p Fe(2)p Fg(A;)14
b(\033)2371 1816 y Ff(2)2408 1846 y Fe(\))1512 1946 y
Fg(H)1581 1958 y Fd(\000)p Ff(1)p Fb(;)p Ff(1)1746 1946
y Fe(:)83 b Fg(y)26 b Fc(\030)d Fg(N)9 b Fe(\(0)p Fg(;)14
b(\033)2244 1916 y Ff(2)2281 1946 y Fe(\))1512 2046 y
Fg(H)1581 2058 y Ff(1)p Fb(;)p Fd(\000)p Ff(1)1746 2046
y Fe(:)83 b Fg(y)26 b Fc(\030)d Fg(N)9 b Fe(\(0)p Fg(;)14
b(\033)2244 2015 y Ff(2)2281 2046 y Fe(\))1564 2145 y
Fg(H)1633 2157 y Ff(1)p Fb(;)p Ff(1)1746 2145 y Fe(:)83
b Fg(y)26 b Fc(\030)d Fg(N)9 b Fe(\(2)p Fg(A;)14 b(\033)2306
2115 y Ff(2)2343 2145 y Fe(\))0 2316 y(The)28 b(join)n(tly)f(optim)n
(um)h(detector)f(is)1016 2621 y(^)1019 2643 y Fg(b)1055
2655 y Fb(k)1118 2643 y Fe(=)1206 2423 y Fa(8)1206 2498
y(>)1206 2523 y(>)1206 2548 y(<)1206 2697 y(>)1206 2722
y(>)1206 2747 y(:)1321 2493 y Fc(\000)p Fe(1)82 b(if)29
b Fg(y)c(<)e Fc(\000)p Fg(A)1386 2593 y Fe(1)82 b(if)29
b Fg(y)c(>)e(A)1321 2692 y Fc(\000)p Fe(1)82 b(with)29
b(probabilit)n(y)d(1/2)g(and)1386 2792 y(1)82 b(with)29
b(probabilit)n(y)d(1/2)g(if)33 b Fc(\000)18 b Fg(A)23
b(<)g(y)j(<)c(A)0 2996 y Fe(The)28 b(bit)g(error)d(rate)i(is)495
3197 y Fg(P)548 3209 y Fb(k)589 3197 y Fe(\()p Fg(\033)s
Fe(\))84 b(=)945 3140 y(1)p 945 3178 42 4 v 945 3254
a(2)996 3197 y Fg(P)12 b Fe(\()1090 3175 y(^)1093 3197
y Fg(b)1129 3209 y Ff(1)1189 3197 y Fe(=)23 b(1)p Fc(j)p
Fg(b)1378 3209 y Ff(1)1437 3197 y Fe(=)g Fc(\000)p Fe(1)p
Fg(;)14 b(b)1705 3209 y Ff(2)1764 3197 y Fe(=)23 b Fc(\000)p
Fe(1\))17 b(+)2101 3140 y(1)p 2101 3178 V 2101 3254 a(2)2153
3197 y Fg(P)12 b Fe(\()2247 3175 y(^)2250 3197 y Fg(b)2286
3209 y Ff(1)2346 3197 y Fe(=)23 b(1)p Fc(j)p Fg(b)2535
3209 y Ff(1)2594 3197 y Fe(=)g Fc(\000)p Fe(1)p Fg(;)14
b(b)2862 3209 y Ff(2)2921 3197 y Fe(=)22 b(1\))787 3407
y(=)945 3351 y(1)p 945 3388 V 945 3464 a(2)1010 3290
y Fa(\024)1054 3407 y Fg(Q)p Fe(\()1162 3351 y(3)p Fg(A)p
1162 3388 104 4 v 1189 3464 a(\033)1276 3407 y Fe(\))c(+)1419
3351 y(1)p 1419 3388 42 4 v 1419 3464 a(2)1485 3290 y
Fa(\022)1546 3407 y Fg(Q)p Fe(\()1654 3351 y Fg(A)p 1654
3388 63 4 v 1660 3464 a(\033)1726 3407 y Fe(\))h Fc(\000)f
Fg(Q)p Fe(\()1968 3351 y(3)p Fg(A)p 1968 3388 104 4 v
1994 3464 a(\033)2081 3407 y Fe(\))2113 3290 y Fa(\023)q(\025)2237
3407 y Fe(+)2330 3351 y(1)p 2330 3388 42 4 v 2330 3464
a(2)2395 3290 y Fa(\024)2439 3407 y Fg(Q)p Fe(\()2547
3351 y Fg(A)p 2547 3388 63 4 v 2553 3464 a(\033)2619
3407 y Fe(\))h(+)2763 3351 y(1)p 2763 3388 42 4 v 2763
3464 a(2)2828 3290 y Fa(\022)2889 3407 y Fe(1)f Fc(\000)g
Fe(2)p Fg(Q)p Fe(\()3182 3351 y Fg(A)p 3182 3388 63 4
v 3188 3464 a(\033)3254 3407 y Fe(\))3286 3290 y Fa(\023\025)787
3632 y Fe(=)945 3576 y(1)p 945 3613 42 4 v 945 3689 a(4)996
3632 y Fg(Q)p Fe(\()1104 3576 y(3)p Fg(A)p 1104 3613
104 4 v 1131 3689 a(\033)1218 3632 y Fe(\))h(+)1362 3576
y(1)p 1362 3613 42 4 v 1362 3689 a(4)1413 3632 y Fg(Q)p
Fe(\()1521 3576 y Fg(A)p 1521 3613 63 4 v 1527 3689 a(\033)1593
3632 y Fe(\))g(+)1737 3576 y(1)p 1737 3613 42 4 v 1737
3689 a(4)1929 5356 y(1)p eop
%%Trailer
end
userdict /end-hook known{end-hook}if
%%EOF