In september 1999, the IEEE approved a new designation, known as 802.11.intended to retain the error-correction，security, powermanagement and other advantages of the original, a key ingredient-a thchnique for increasing bandwidth to 11M bit/sec.
Called complementary code keying（CCK）the technique works only in conjunction with the DSSS technology sprcified in the original standard . it does net work with frequency-hopping or infrared transmissions.
What CCK does is apply sophisticated mathematical formulas to the DSSS codes, a permitting the code to represent a greater volume of informitter is now able to send multiple bits of information with each DSSS code, enough to make possible the 11M bit /sec in the original standard .
The 802.11b standard benefits users by delivering wireless ethernet speeds of 11M bit/sec that can reliably support everyday business applications, e-mail, internet and server network access.
With support from the new wireless ethernet from the new wireless ethernet compatibility alliance, founded by 3com, lucent, nokia and several other companies in the wireless LAN business, the new standard will also promise certified interoperability across multivendor platforms.
Finally, the 802.11b standard serves as a clamoring for a simplified wireless LAN landscpape.
Vendors can now focus on a single, high-speed standard, and users can cut through the clutter of wireless options by fovusing on a standard that delivers multibvendor interoperability and the performance to meet their application needs.
1999年9月，IEEE批準了稱作802.11B的新名稱，作為802.11的高速擴展。此新的802.11B標準在保留原標準的糾錯、安全、電源管理和其他優點的情況下，增加了一項關鍵內容，即把帶寬增加到11兆位/秒的技術。
此項技術叫做互補碼鍵控（CCK），他只與原標準中規定的直接順序擴頻（DSSS）技術一起工作，不能用跳頻或紅外線傳輸方式工作。
CCK所做的工作是把復雜的數學公式應用于DSSS代碼，以允許該代碼在每個時鐘周期表示更多的信息�，F在發射機能在每個DSSS代碼中發送多個信息位，足以實現每秒11兆位/秒的數據傳輸率，而不是原標準的2兆位/秒。
802.11B 標準給出11兆位/秒的無線以太網速度，給用戶帶來好處，速度能可靠地支持日常的業務應用、電子郵件、因特網和服務器網絡的接入。
由3COM、LUCENT、NOKIA和其他幾家有無線局域網業務的公司組成的“無線以太網兼容性聯盟”支持新的標準，此標準也有望實現跨多廠商與用戶團結起來的作用。
現在，廠商能專注在單一的高速標準上，用戶也能以通過關注給出廠商互用性和性能。以滿足他們應用要求的標準上，解決了從一大堆無線網中作選擇的難題。（全文完）
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