无线通信试题【带答案】 .txt

tianyueyou 1.2 1uhfd a4002000mhz b3002000mhz c4003000mhz d3003000mhz 2impb a b c d 310wdbmd a10dbm b20dbm c30dbm d40dbm 4a 粨 a3000ghz b3000mhz c300mhz d300ghz 530300mhz粨 a a b c d 6dbuvdbmdbmc a b c d 7gsmb afdma btdma ccdma dsdma 8phs a a288khz b200khz c25khz d30khz 9cdma a a1.23mhz b1.5mhz c1.75mhz d1.85mhz 100dbw= cdbm. a0 b3 c30 112.5w50db bw a2.5 b25 c250 12rbwb a b c 13gb1204689涨1.5mhza a1m50 b15m0 c150m 1490%a a b c 15书10w10db5db书 b a25dbw b15dbw c5dbw 16 a a b c 17sc c a12ghz4/6ghz b1840ghz8/12ghz c2.5ghz4/6ghz d4.8ghz4/8ghz 18cdmagsma mhz a5 b10 c15 19a aask bfsk cpsk ddam 20abcd a b c d 21shf c a 101 b 101 c 101 22书b a0.1 b0.5 c1 23, b a. b 24, c a.30khz30mhz b30mhz100mhz c100mhz1000mhz 25 a a b c d 26 a5dbi b4.25dbi c3dbi d2.15dbi 27400mhz( b ) a460.5460.6mhz b460.0460.1mhz c460.1460.2mhz d460.2460.3mhz 28 a a b c d 29 c a粨粨 b粨粨 c粨 d 30 a ar bor cr dor 31 d ar bor cr dor 32(a c d) a b c d 3325khz绰(c)(b),(d) a.25khz b3khz c 5khz d16khz 34, 粨a b c d a. b c d 35绮abcd a b c d 36绮ad a b c d 37绮abcd a b c d 38涨(c) a8m6m b5m6m c250m9m 39gb 6364-86絼涨vor(c)db a 20 b272430 c373440 41, gbj 20093-92vhf/uhf涨1kw1kw(b) m a100 41, gjb 2081-9487-108mhz108-137mhz涨( b )dbv/m a121918 b323938 c424948 42, ( a ) a b c 43phsgsmcdma( a) atdd/tdmafdd/tdmafdd/cdma bfdd/tdmafdd/tdmacdma ctdd/tdmatdd/tdmafdd/cdma 44phs3g3gphs( b) a1900mhz c 1915mhz b1900mhz c 1920mhz c1895mhz c 1918mhz 45 a aw0 = 1/lc1/2 bw0 = 1/lc cw0 = 1/2 lc1/2 dw0 = 1/2 lc 46 b a b c 47豸 b a b c d 48 a a b c 49fmaxfmin b afmax/ fmin bfmaxfmin/2 cfmax+fmin/2 dfmaxfmin/fmax+fmin 50uwbb a b c d 51itu滮3g d a825835/870-880 mhz b930960 /885-915mhz c17101755/1805-1850mhz d1885-2025/2110-2200 mhz 52prsa a b c dabc 53ab a b c d 54(abc) a b c d 55巴 a b c d 56(b) a b c d 57( c ) a b c d书 58涨 b a b c d 59 d a2w103km b2w104km c2w105km d2w106km 60( d ) a b c d 61fmmf10% b ab=2fm bb=2mf+1fm cb=2mf+2fm db=2mffm 62cdmais-95( a ) a b c dtdma 63( a b ) a絼 b綨 c d 64( abcd ) a b c d 65( abc ) a b c d 66abcd a b c d 67 abc a b c d 68 ad am+100 % bm+100 % c d 69(abcd) a b c d 70(abcd) a b c d 71(a) av ka k ku bka v k ku c v k ka ku d v ka ku k 72涨lmdsb a1.5ghz b26ghz c15ghz d24ghz 73itu(a) a b c d 74緢bcd a b c d 75絼ac (桶涨) a 108mhz136.975 mhz b 2700 mhz2900 mhz c 960 mhz1215 mhz d5725 mhz5850 mhz 763涨5725 mhz5850 mhzabc a b c dsdh 77bd a3.6ghz b2.4ghz c7.6ghz d5.8ghz 78ac aw/m2 bdbuv cdb(w/m2) ddb(/m) 79 b a1 b2 c3 d4 80dbidbddbidbd c a+1.25 b-1.25 c+2.15 d-2.15 81绰 b a b c d绰 82abcd a b c绰 d 83, d a16101610.100mhz b13201320.100 mhz c810810.100 mhz d406406.100 mhz 84 b a书 b书 c书 d 85, a a b c d 86, 4.5c c a b漫 c d 87, b 潹 a b c d 88, a b c d 89, cdma c a b c d 90, d a b c豸粨 d 91, 2900mhz b als bs cx dku 92, 16qam16 d bit a1 b2 c3 d4 93, d a b c0 d 94, 0.1 d a1/8 b1/4 c1/3 d1/2 95, 1 b a1/4 b1/2 c