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key modulation 鍵控調制。

key money

After elaborating the principle of an 802 . lib key modulation scheme - complementary code keying ( cck ) , this paper proposes and realizes a hardware circuit solution of 802 . 11b pcmcia wlan interface card , which can reliably offer a maximal 11mbps data rate and freely switch within 14 working channels in 2 . 4ghz frequency band 接著在詳細闡述了802 . 11b協議核心調制技術?互補碼鍵控( cck )的原理的基礎上,本文提出并實現了一種峰值傳輸速率為11mbps的802 . 11bpcmcia高速無線網卡的硬件電路設計方案,在2 . 4ghz頻段該網卡可在14個工作信道上自動切換,實現高速突發數據的可靠傳輸。

Edge uses a new modulation scheme - 8psk ( 8 phase shift keying modulation ) - to enable the transmission of large amounts of data at a high speed - 384 kilobits per second using existing gsm infrastructure Edge是一種介于現有的第二代移動網絡與第三代移動網絡之間的過渡技術。 edge將是通向3g的一個重要里程碑。

This thesis focuses on the performance of complete complementary keying modulation and multi - carrier cdma architecture based on complete complementary codes ( ccc - cdma ) 本文主要研究了基于互補碼擴頻的cck調制性能和基于完全互補碼擴頻的多載波cdma系統性能,主要工作可以分為以下幾個部分。

The frequency shift keying modulation is widely used in hf digital communication 移頻鍵控是短波數字通信中常用的一種調制方式。