Manual Lancom L-320agn Wireless (page 18 of 97) (English)

680892

Zoom out

Zoom in

1/97

LANCOM L-32x Access Point series

 Chapter 1: Introduction

second channel remains optional throughout, with transmitter and receiver

deciding dynamically whether one or two channels should be employed.

As the implementation of 40 MHz with separate control and extension chan-

nels is more efficient in the 802.11n standard than in the conventional turbo

mode, more than double the amount of carrier signals can be obtained (108

in total). The maximum data throughput when using improved OFDM modu-

lation and two parallel data streams thus rises to 270 Mbps.

Short guard interval

The final improvement of the 802.11n standard is the improvement in the

chronological sequence of data transmission. A signal that is to be transmit-

ted in a WLAN system is not broadcast at a distinct point in time but is "held

up" for a certain, constant transmission period. In order to prevent interfe-

rence at the receiving end, a short break is made following the transmission

period before the transmission of the next signal commences. The entire dura-

tion of transmission period and break are referred to in WLAN terminology as

"symbol length" and the break itself is known as the "guard interval".

IEEE 802.11a/g uses a symbol length of 4 μs: the information transmitted on

the carrier signal changes following transmission of 3.2 μs and a break of

0.8 μs. 802.11n reduces the break between transmissions to the so-called

"short guard interval" of only 0.4 μs.

20 MHz 20 MHz

Control channel Extension channel

3,2 μs 0,8 μs

0,4 μs

OFDM Symbol

3,2 μs

Payload data

Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

Forumrules

To achieve meaningful questions, we apply the following rules:

First, read the manual;
Check if your question has been asked previously;
Try to ask your question as clearly as possible;
Did you already try to solve the problem? Please mention this;
Is your problem solved by a visitor then let him/her know in this forum;
To give a response to a question or answer, do not use this form but click on the button 'reply to this question';
Your question will be posted here and emailed to our subscribers. Therefore, avoid filling in personal details.

new questions and answers
new manuals

You will receive an email to register for one or both of the options.

Get your user manual by e-mail

Enter your email address to receive the manual of Lancom L-320agn Wireless in the language / languages: English as an attachment in your email.

The manual is 1,57 mb in size.

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.

Info

Lancom L-320agn Wireless Manual

Product: