3G网络通信技术的最初灵感就来自于这样的自动钢琴纪录纸带

安泰尔所说的自动钢琴很象老式计算机，通过读入编好码的打孔纸带来演奏，为了协调好这些同时演奏的自动钢琴，安泰尔着实在编码上费了一番心血才找到解决之道。因此，他和海蒂小姐最初实现跳频技术时也选用了类似自动钢琴上使用的打孔纸带来同步信道，甚至连信道数都参考了钢琴键的数目－－88个。

自动钢琴，最早实用化的编码和解码器

当然，只能编译自动钢琴自己打出的密码纸带。谁能想在海蒂小姐的公寓内，安泰尔将自动钢琴演奏器、鼓、锣，甚至是任何能够派上用场的乐器组合在一起，在无线设备和自动机械的协调下，保证每一种不同的乐器都能够在工作中与整体达到同步。灵感瞬间涌现的同时，两人用数百根火柴棒和铅笔在地毯上摆出第一张关于“免干扰无线技术”原理图。然后，将鱼雷引导系统的最初概念，用铅笔潦草地逐字写在寄自安泰尔家的一个信封上。信封背面是这种通信方法的草图，正面是一段简短的描述。海蒂小姐和安泰尔用一张简单的图画和区区几百字，抓住了免干扰通信系统的主要原理，其基本思想就是为了避免干扰必须从一个频率跳到另一个频率。这一挑战设计将发送方和接收方的信号要想在管弦乐中一样达到同步。这个系统根据所需秘密等级一级使用技术的复杂程度，范围可以从相对简单的地步到极端复杂的程度。

最初设计图纸

将传输信号打散到不同的频谱上，提高传输效率和稳定性

发送方和接收方拥有同步的频谱切换频率，能够实现对信号的有效发送和接收

经过了数月的辛勤工作，这个构思已经初具雏形。1940年12月，两人将一份说明送交至国家发明家委员会。委员会主席查尔斯看过手稿之后非常兴奋，并建议海蒂小姐和安泰尔继续完善其构思后申请专利。好心的主席还给他们介绍了Caltech的电气工程学教授，在这位教授的帮助下，他们精心剔除了导致故障的程序错误，终于在1942年8月，这项发明被授予美国专利。这个极富艺术感染力的形象比喻，却没有打动当时的军方人员。据安泰尔回忆说，当时美国海军在回绝这项发明时说：“我们又不能在鱼雷中，真的塞进一台自动演奏钢琴。”甚至，军方放言称，如果拉玛真的想要为国出力，还不如多利用她的美貌和明星的地位帮助政府多卖出一些公债。事实上，拉玛真的出力，卖了七百万美金的公债，而她与丈夫的伟大发明，则一直处于被冷冻的状态，直到上世纪50年代才得到正视，当时，美国海军给霍夫曼无线电公司一份匿名的专利，让它据此生产声纳浮标，这就是当年拉玛和安泰尔的专利。后来军方对据此专利发展起来的展布频谱技术解禁，于是成就了现在的高通公司（Qualcomm)。

发明专利，第一作者海蒂拉玛，第二作者安泰尔

在专利说明中，描述了一种引导鱼雷的通信方法，即在一段固定时间内，在载波频率之间发射方和接收方用一种同步的通信方式。被发射方（一架高处的飞机）和接收方（一枚运行的鱼雷）所采用载波频率的同步的编号，是由一种类似自动钢琴音乐筒的装置控制，该装置有一个独特的由88个可能的阶梯组成的序列。这就意味着，通过在每个频率上仅发送整个信息的一小部分，鱼雷能受到操纵。干扰通信的企图通常一次只能是一条信道失去作用，而在其他信道上的信息足以保证鱼雷作出必要的方向矫正，以击中目标。

现代的无线电指令指导流程图

中间从地面“跟踪系统”到飞行物上的“信标机”间的通信保密就是Hed，也就是说，海蒂小姐和安泰尔打破了在一个单独频率上的常规的通信模式，而这种常规的模式自从无线电发端以来就一直被使用着。尽管海蒂小姐的专利是之后上百种专利的基础，今天的扩频通信技术就起源于“跳频”概念，但当时还没什么人能理解这一发现的深奥含义，也还没人能制造出具备专利所描述的功能的设备，美国军方也还是把这一专利归为官方机密一档，并且其概念数十年都被置于严格保密之中。　　直到上世纪50年代后期，海蒂的这一杰出设计思想，才被广泛运用到军队计算机芯片中。从那时起，这一技术也启发了许许多多通信领域的科学家，从而被广泛运用到手机、无线电话和互联网协议的研发上 "

引用一篇报道（英文，准确性比较高）：

《This 1940s Hollywood Actress Made Wi-Fi Happen》 HEDY LAMARR, screen actress, was revealed today in a new role, that of an inventor,"reported The New York Times on 1 October 1941. "So vital is her discovery to national defense that government officials will not allow publication of its details." The invention was not her first. Lamarr previously experimented with cola-flavoured bouillon cubes for homemade soft drinks. But her new idea, which officials would only say was "related to remote control of apparatus employed in warfare", would become a signal innovation of the century, the technology now underlying cellphones and Wi-Fi. Expertly explaining the genesis and consequences of Lamarr's invention, in Hedy's Folly, Richard Rhodes transforms a surprising historical anecdote into a fascinating story about the unpredictable development of novel technologies. When Lamarr turned her attention to national defence, following the tragic sinking of a ship full of refugees by a German U-boat in 1940, she knew far more about armaments than most movie stars. Before arriving in Hollywood, she had been married to the Austrian munitions manufacturer Fritz Mandl, who supplied the Axis powers. Dining with Nazi generals, Lamarr not only learned about the latest submarines and missiles but also the problems with them: notably the challenge of guiding a torpedo by radio, and shielding the signal from enemy interference. Her insight was that you could protect wireless communication from jamming by varying the frequency at which radio signals were transmitted: if the channel was switched unpredictably, the enemy wouldn't know which bands to block. But her ingenious "frequency-hopping" idea was just a hunch until Lamarr met fellow amateur inventor George Antheil at a Hollywood dinner. Notorious in the music world for avant-garde compositions featuring airplane propellers and synchronised player pianos, prior to the war, Antheil had galvanised Paris, and incited riots, with his cacophonous Ballet Mécanique. He had also attempted to invent an open-top pianola with which to teach basic keyboard technique. It flopped, but this background came in handy. To realise Lamarr's idea, Antheil proposed coordinating transmitter and receiver by controlling the switching between channels with two identical piano rolls running at the same speed. At least that was the analogy - and the analogy was what sunk their plan. When the US navy rejected their invention, Antheil remarked: "My God! I can see ［them］ saying, 'We can't put a player piano into a torpedo!'" The usefulness of their idea went unrecognised until the 1950s, and unimplemented until the 60s. By then the operating premise, known as spread-spectrum, had applications far beyond torpedoes and frequency-jamming. Information theory proved that a signal was made more robust - and could be transmitted more efficiently - if spread across multiple frequencies. The problems introduced by new technologies gave an old idea new salience. Today, for example, frequency-hopping prevents cellphone conversations from criss-crossing. Ideas suggested by practical needs often fail to meet those needs for trifling reasons, only to later serve purposes that could never have been anticipated. Rhodes misses an opportunity to pursue these concepts beyond the narrow confines of this story, yet as with the invention he describes, this insightful book has more implications than he ever could intend. 

Further reading Viterbi, Andrew J.(1995). CDMA: Principles of Spread Spectrum Communication (1st ed.). Prentice Hall PTR. "Telecom Resources - CDMA" Telecom Resources. Lohninger, Hans (2005-12-17). "Direct Sequence CDMA Simulation". Learning by Simulations. "CDMA Spectrum". . Shakya, Indu L. (2011). High Capacity CDMA and Collaborative Techniques: New Approaches and Insights into Problems of Wireless Multiple Access(1st ed.). VDM Verlag.

天要有多宠爱一个女人，才会给予她如此丰厚的礼遇。福布斯旗下的《美国发明与科技遗产》杂志发了专刊，用大块文章介绍她的科技贡献，并将其玉照作为当期封面。至今人们仍评价说：“那是有史以来，在所有科学技术刊物里，最漂亮的封面。